I would say at some point, pilots should ignore the aviate, navigate and communicate and change to communicate, aviate and navigate.
Unless you call out for help, cavalry is not going to come on its own at 12 knots.
I'm really not sure I follow you logic with that statement.
Surely aviate always has to be paramount - neglecting to do that when the chips are down and instead spending time shouting "help" might mean the cavalry arriving at 12 knots or 120 knots could be irrelevant.