you can do this in office / hybrid too. It wasn't uncommon when FAANG hiring was ebbing and flowing or people would leave to come back at those places (some FAANGs have weird policies on promoting internally vs externally. It was sometimes easier to leave and comeback)
I worked somewhere where we always had a dozen boomerang FAANG engineers, the practice stopped when everyone realized they were coasting often and getting way to close to deadlines, had poorer than expected engineering output etc.
