This is a good fairly recent example of OOG, it also directly highlights what I was talking about. Diver 3 exited the cave with 1500 in one cylinder and 0 in the other. Even if he would have gone back to get Diver 4, he'd have had no practical way to share gas with him, given they were ~100ft from the exit, 43cuft likely would have been enough to get them back to the door, they did a lot wrong that put them in that situation to start with...
It also highlights some of the task loading issues with side mount which is why some organizations view it as a tool for specific missions and not a general purpose configuration specially for newer cave divers.
It also highlights some of the task loading issues with side mount which is why some organizations view it as a tool for specific missions and not a general purpose configuration specially for newer cave divers.