Originally Posted by
JJ21
"Also airliners do not have targeting radar that can track other aircraft."
you dont need radar you just need a clear view out of your cockpit window to see the nav lights of another plane.
If you know exactly where he's supposed to be and when.
If it's clear out.
If you acquire the correct set of blinky lights from miles away.
If he's not late.
If you can get catch up without resorting to afterburners.
Or perhaps you've done subsonic night VFR intercepts without GCI or radar?
Not saying it absolutely wouldn't work but the odds are low enough that nobody would think it was a good plan.