More for reciprocal tracks at same altitude on autopilot. Read up on the 737 vs. a Legacy in Brazil a few years back. Legacy crew accidentally turned off their transponder, ATC had them at wrong level. Lost their winglet but survived. 737 lost the outboard 1/3 of their wing and didn’t...
https://en.wikipedia.org/wiki/Gol_Tr...os_Flight_1907