"Bob Gardner" wrote

Transport category aircraft (what you call commercial) are stalled
during manufacturer's certification tests and that is about it.

Bob, in order to demonstrate my ability as an airline B-707 flight
instructor, the FAA required me to demonstrate instruction in full
stalls. Done lots of them. A little more exciting than a C-172,
but not much. :-) Instruction in "Dutch Roll" recovery with the
yaw damper turned off was much more exciting.

Bob Moore