Yes he said that.
Children can fly as unaccompanied minors in Canada. From personal experience, the flight has to be direct. We had to be at the gate to get them on, their aunt had to be at the destination gate to receive them. Documentation (a letter signed by both their dad and I, granting permission, along with copies of our gov’t issued ID attached had to be attached), as well they had to be in possession of their own passport. The airline rep had to be the one to physically escort our minor to their aunt. She had to have the proper ID before our minor was handed off.
If Lilly and Jack left via a private airport, it would be different. We’re talking a chartered flight. Still, there would be flight logs of passengers investigators could review.
IMO, unlikely Lilly and Jack disappeared this route, or via any airport, with a stranger.
jmo/moo