Okay, the LAS-STN on 7/5 diverted to YQX (Gander) after having mechanical problem over northeast Quebec or northern Labrador.
The other plane was spotted at ATL. It ferried from STN to ATL, then flew ATL-MAN-NBO. According to someone on a.net, it was a private charter by Falcons owner Arthur Blank.
Interesting, to say the least...