Multiple streams is BAU with RTP - using smpte-2022-7, or most of the time just firing the packet different times on different routing tables.

Sometimes network paths die. This could be a dodgy router in a third party network that drops streams for 150ms at a time, or a bgp recalculation that knocks it out for maybe a minute or so.

In both cases you need to have multiple routes to keep your latency low.