OK, let’s back the conversation up, a bit.Your post got me thinking about the "Gimli Glider", flight 143 out of Winnipeg in 1983. That was a 767, sort of an over grown 737.
I asked a retired Air Canada pilot that had worked there since the TCA days flying Vangards if he ever saw in his 35 years up there, anything like a UFO ?
" Well, we were headed east over Nevada on a flight from LA (X) to Winnipeg, we could see the lights of Vegas on our right and something
passed us like we were standing still. We both looked at each other and said; what the _____ was that?"
His wife backed up the story, because that's all he talked about for a week.
I didn't think that USAF aircraft were allowed to buzz commercial airliners. So what could it have been?
The 767 is a newer, larger, more sophisticated, longer range and more capable airplane than the 737.
It’s not an “overgrown 737”. They share a configuration (twin engine) and that’s about it. Same way a Jetta and a Porsche share a configuration (four wheels) but you wouldn’t call a Porsche an overgrown Jetta.
Next, nobody buzzed your friend. If it was that fast, it may not have been an airplane. A light moving in the sky can be a meteor, a satellite, or other natural phenomena. Or it may have been an airplane out of Nellis AFB, but it was nowhere close to your airliner.