I don't see the connection. Before Octopus you buddy breathed - taking it in turns with 1 reg.
If you mean that having a pony means you don't need to be concerned about your buddy because "you're alright" then I would disagree
I did an awful lot of buddy breathing ascents from 20m (as an instructor), before we changed the training and assessment procedures. I am really, really pleased I never had to do it for real, even with practiced 'current' divers, running an exercise, it was seldom comfortable. A number where touch and go.
The reason 'Buddy Breathing' was dropped from the training scheme, was the regular 'double casualty' incidents when there was an OOG incident.
Relying on Buddy Breathing, when technology had advanced to provide an Octopus made no sense, the risk's where higher, the outcome poorer, the number of fatalities higher. In addition, it was notable, that there was so much time and practice attempting to achieve competence with buddy breathing, that divers with Octopuses started buddy breathing, muscle memory taking over during the stress of an incident.
Can we inject a poll to see how many minds were changed. At 38 pages there must be some.
I can't stop looking at this thread until I know. Help...
I suspect there are some very entrenched views.