I see what you mean, front end overload often results in what appears to be a weaker signal, a lower S reading and sometimes modulation drives it backward. A "shootout" is entirely different, the guy who stomps on the other one wins since they transmit simultaneously.
That reminds me of back in the day when a bunch of local CB old farts went on a rampage against Thunder Base (thanks to a Johnson Valiant) located in a small town here at the shore when The Crusher was on. Half jealousy and half outrage at how the younger set loved his acerbic wit? They tried to track it down with their mobiles to no avail, whenever they came into town their receivers went haywire. In those days every other house had an antenna and ours was high in a tree where they couldn't see it. (;->)