That's a very interesting notion. When you visualise leaning into your feelings, do you not see an entity (A) leaning into feelings (B) ? isn't that separation in itself?
And once you think of it this way, would you agree the only way to really work with our feelings, is to separate and be a master over it?
What I am suggesting is not separate and ignore feelings. but separate and manage our feelings.
Finally, of course ego is not a real entity - it's a construct thought concept that if not carefully manage, will have real power over us. It's like money is not exactly real (as in they are paper), but it has power.
Thoughts welcome!! i like a good debate :)