time stretch two adjacent events?

If I have an event, and split it, can I move the boundary between them (right edge of left event; left edge of right event) such that one event is time stretched longer and one shorter?

I’ve been doing it in the project window with the select tool set to “Sizing Applies Time Stretch” but I have to do the events separately.

Or maybe I’m doing it the hard way. Isn’t that what Audio Warp is for? But I’d need to see a reference waveform for aligning two vocal tracks.

EDIT: I am seeing posts of others working like this but no mention of operating on two events at the same time: