Question Timeline Dialogue Function

Alright so I have a pretty good dialogue system for the game I am making, however I'm having trouble with the timeline feature. Now i love timeline, it's incredible and I would like to use it more. But I need to figure out this issue I keep having.

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using TMPro;
5.  
6. public class Dialogue : MonoBehaviour
7. {
8.     //Fields
9.     //Window
10.     public GameObject window;
11.     //Indicator
12.     public GameObject indicator;
13.     //Text component
14.     public TMP_Text dialogueText;
15.     //Dialogues list
16.     public List<string> dialogues;
17.     //Writing speed
18.     public float writingSpeed;
19.     //Index on dialogue
20.     private int index;
21.     //Character index
22.     private int charIndex;
23.     //Started boolean
24.     private bool started;
25.     //Wait for next boolean
26.     private bool waitForNext;
27.  
28.     private void Awake()
29.     {
30.         ToggleIndicator(false);
31.         ToggleWindow(false);
32.     }
33.  
34.     private void ToggleWindow(bool show)
35.     {
36.         window.SetActive(show);
37.     }
38.     public void ToggleIndicator(bool show)
39.     {
40.         indicator.SetActive(show);
41.     }
42.  
43.     //Start Dialogue
44.     public void StartDialogue()
45.     {
46.         if (started)
47.             return;
48.  
49.         //Boolean to indicate that we have started
50.         started = true;
51.         //Show the window
52.         ToggleWindow(true);
53.         //hide the indicator
54.         ToggleIndicator(false);
55.         //Start with first dialogue
56.         GetDialogue(0);
57.     }
58.  
59.     private void GetDialogue(int i)
60.     {
61.         //start index at zero
62.         index = i;
63.         //Reset the character index
64.         charIndex = 0;
65.         //clear the dialogue component text
66.         dialogueText.text = string.Empty;
67.         //Start writing
68.         StartCoroutine(Writing());
69.     }
70.  
71.     //End Dialogue
72.     public void EndDialogue()
73.     {
74.         //Stared is disabled
75.         started = false;
76.         //Disable wait for next as well
77.         waitForNext = false;
78.         //Stop all Ienumerators
79.         StopAllCoroutines();
80.         //Hide the window
81.         ToggleWindow(false);      
82.     }
83.     //Writing logic
84.     IEnumerator Writing()
85.     {
86.         yield return new WaitForSeconds(writingSpeed);
87.  
88.         string currentDialogue = dialogues[index];
89.         //Write the character
90.         dialogueText.text += currentDialogue[charIndex];
91.         //increase the character index
92.         charIndex++;
93.         //Make sure you have reached the end of the sentence
94.         if(charIndex < currentDialogue.Length)
95.         {
96.             //Wait x seconds
97.             yield return new WaitForSeconds(writingSpeed);
98.             //Restart the same process
99.             StartCoroutine(Writing());
100.         }
101.         else
102.         {
103.             //End this sentence and wait for the next one
104.             waitForNext = true;
105.         }      
106.     }
107.  
108.     private void Update()
109.     {
110.         if (!started)
111.             return;
112.  
113.         if(waitForNext && Input.GetKeyDown(KeyCode.E))
114.         {
115.             waitForNext = false;
116.             index++;
117.  
118.             //Check if we are in the scope fo dialogues List
119.             if(index < dialogues.Count)
120.             {
121.                 //If so fetch the next dialogue
122.                 GetDialogue(index);
123.             }
124.             else
125.             {
126.                 //If not end the dialogue process
127.                 ToggleIndicator(true);
128.                 EndDialogue();
129.             }          
130.         }
131.     }
132.  
133. }

This my normal code for dialogues when the player is playing the game (not in a cutscene)

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class DialogueTrigger : MonoBehaviour
6. {
7.     public Dialogue dialogueScript;
8.     private bool playerDetected;
9.  
10.     //Detect trigger with player
11.     private void OnTriggerEnter2D(Collider2D collision)
12.     {
13.         //If we triggerd the player enable playerdeteced and show indicator
14.         if(collision.tag == "Player")
15.         {
16.             playerDetected = true;
17.             dialogueScript.ToggleIndicator(playerDetected);
18.         }
19.     }
20.  
21.     private void OnTriggerExit2D(Collider2D collision)
22.     {
23.         //If we lost trigger  with the player disable playerdeteced and hide indicator
24.         if (collision.tag == "Player")
25.         {
26.             playerDetected = false;
27.             dialogueScript.ToggleIndicator(playerDetected);
28.             dialogueScript.EndDialogue();
29.         }
30.     }
31.     //While detected if we interact start the dialogue
32.     private void Update()
33.     {
34.         if(playerDetected && Input.GetKeyDown(KeyCode.E))
35.         {
36.             dialogueScript.StartDialogue();
37.         }
38.     }
39. }

I'm not sure if this is needed to be shown but this is my dialogue trigger script.

I want my cutscenes to have the same dialogue box, with text and typewriter effects, and still have the player able to press E before continuing the cutscene.
I have tried putting the dialogue prefab as a control track, but every time I play back in game, it disappears.

I'm so confused idk even know how to start fixing this