A bit like dogs engaging in bum-sniffing. To see what the other one is made of or maybe an opportunity for a quickie? If Strategic are having problems with their AOC application, buying Ozjet is a misguided way around the problem. Their smooth CEO may spend big with other peoples money but by now he must know a bit about the way CASA works.
So the game plan is something else. And neither NJS, Network, Alliance nor Skywest would be keen on the something else so they sniff as well. The worst they can do by showing interest is drive the price up a bit.