[Allstar Digital] DMRGateway failure

[Steve Zingman]

2 Masters, 1 Peer.
Repeater1 connected to Master1
Repeater2 connected to Master2
Peer connected to BM
ambe_audio connected to BM

So,
signal to and from ambe_audio do not get to R1 and R2
signal to and from ambe_audio DO get to BM and beyond
signal to and from R1 and R2 DO get to BM and beyond

Common point of failure, R1, R2 and ambe_audio all connect to BM Signals 
not passing through BM?
Why can't 2 SmartPTT connections on the same BM Master talk to each other?