It would come down to the "smarts", I can't speek for wifi mesh but
other wireless mesh networks either receive and transmit knowing it's
destination, transmit on a different frequency band or broadcast the
data to the network for a time period in the hope it gets to it's
destination. I would hope they would sample for traffic before send at
least, reducing the cross talk but not eliminating it.
They are all in my opinion inefficient of carrying high bandwidth data
streams so you would have to predict the traffic in the network.
The other option may be to have point to point links, this way you can
control the traffic flow.