I think the whole "always buddy breathe" thing is overblown in shallow water
Last month I was doing a hull inspection in San Diego harbor, maybe 15 feet down, and my regulator started free flowing out of nowhere. Buddy was 30 feet away on the other side of the boat. Instead of swimming over and sharing air, I just did a controlled emergency ascent. Took maybe 10 seconds. People act like you're going to die if you don't grab a buddy's octopus every time, but in shallow warm water with a direct shot to the surface, going straight up is faster and safer. Has anyone else actually timed how long a CESA takes versus buddy breathing?