time.y not equal to time.timeSinceLevelLoad

According to the documentation, time.y is the time since level load and not the same as time.Time
https://docs.unity3d.com/Manual/SL-UnityShaderVariables.html

In the past, I forget what unity version, I confirmed this to be true because it was causing me issues and instead had to use time.timeSinceLevelLoad to sync shaders and CPU scripts without the trouble of syncing a custom variable.

This was causing me trouble, so I made a simple test rig to confirm the discrepancy.