Integrating Engine

Can we integrate a UI made in Unreal with game from Unity?
I like Unreal Engine while those working alongside me are on Unity.
So final game is going to be in Unity.
What do you suggest?

No, you can’t separate out components like that. You could possibly run UE4 from within Unity, but you might run into legal restrictions with how you use the UE4 code. Either way, that wouldn’t be a good way to make a game.