They could be potential decoys.....
This is a possibility but please see the four pics I posted:
Montreal airport (Joseeleabee) Rob and Ryan; Pete and Mickey; Natalie and Meaghan waiting in line
Montreal airport (Melissa Foote) East Indian couple
Province House PEI (Chad Heron) "Pete" in front of judges(?)
Province House PEI (Chad Heron) Natalie and Meaghan at the cluebox; "Pete" in background.
So the way I see it, these 4 teams were traveling together, and two of them were seen actually participating.