Originally Posted by
MKE-MR
When I flew IAD-DXB, we had the IAD-KWI flight on Channel 9 with us nearly moment-for-moment, the entire way until it began descent

It was the second departure before us from IAD, if I remember correctly.
I love channel 9 on international flights, with all the different airline call signs and flight crew accents at the big internatinal hubs. Unfortunately channel 9 seems even less common on international flights than on domestic flights.