I actually splice the cable and created 9 ft runs that have worked fine since installed in 2020. Still in place and work great. I don't know anything about the operational environment that Dave reported had interference but mine is fine with those runs. Something to consider at least as a test for yourself.
I considered that, and I'll do it if I need to. I figured out routing for all the cables to locate the IRV2 boxes where I wanted the sleds installed.