Not so in this particular band, no ego involved.
(We could jam for England)
Having been brought up listening to the Deeply Purple ones the length of any non vocal passage was always indeterminate with an “End of it cue” to let us know when we were back on track.
Just occasionally, if the muse was upon him, he’d go off on one.
In fact, on one of our original songs, I always thought it would be a good idea to get a looper and join the singist.