Can GameObject physics interact with Entity physics?

I'm very new to this DOTS thing and when I watch talks about it, the developer that's talking always says something about still having gameobjects whilst at the same time implementing entities.

they say the player can still be a gameObject but if that's so how is the player able to interact with the entities?

I know there's a convert to entity script but that still means I have to write code for the player as if it was an entity and not a gameObject which will still take a long time. As far as I know, entities and gameObjects don't even use the same physics engine. Entity uses Unity.Physics whilst gameObjects uses UnityEngine so I dont even know how those two things can work together.

anyway, please help cause I am very frustrated and my head hurts.