Any two units operating on the same frequency will cross-talk when their sonar pulses overlap. That can be on the same boat or different boats.
I get cross-talk on Side Imaging from boats hundreds of feet away that have any brand of the imaging technology that uses 455 and 800 kHz.
This is cross-talk from a boat nearby that also has Humminbird 360:
Edited by Wayne P. (02/25/16 09:51 AM)
Humminbird Helix 12 CHIRP SI, 1198c SI, 1198c SI, ONIX 10 SI NT, Helix 7 CHIRP SI GPS G2, 360, RC-1