Spending time looking up, with a quick check down to see saw progress, is a preferable thing.
Lots of people watch their saw continue in the same plane as they started the cut, rarely looking up at the top. I can be guilty of this, if not being vigilant
I like to smack a wedge, and look up, smack, look, smack, look, when wedging anything dicey.
Also, timing a swing of the ax with the tree movement is a finesse part of wedging, imo. This might be to sync with wind, motion imparted by wedging (rocking back and forth, or a wobble, like with a dead, slow- tapering tree, conifer or otherwise) or multifactorial.