I don’t think I have ever surprised an Owl.
In fact I have been ‘sneaking up’ to photograph one only to find the Owls mate is almost on my shoulder watching me from behind. There was no sneaking going on.
This Barred Owl sat and watched us moving below to get a clear shot. A few minutes later I discovered there was a second, maybe a meter to this ones right side.
Once again watching silly human tricks.