Simultaneous whistle / different calls?

[Coach Bill]

I was a spectator at a varsity game last night and it happened twice where two different refs blew their whistle seemingly simultaneously, and had different calls:

Sitch 1. One ref had a jump ball, and the other ref had a timeout by the coach prior to the jump ball. They huddled and went with the timeout.
Sitch 2. One ref had an out-of-bounds call and the other ref had a timeout by the coach. They huddled and went with the out-of-bounds.

Don't know if it's relevant, but, each time, the same ref "won".

My question is: What is talked about in the huddles and how is it determined which call to go with?

Thanks!