https://www.videolan.org/vlc/
Yes. The pf reporting it about to cross the pond so it will probably drop off soon.
No ADSB ground stations in the Atlantic.
Expect to pick it up in a few hours when it approaches Iceland or Ireland.
Probably will reappear somewhere near the purple plane west of Ireland on your cap.
Some escort, kek, the T-6 is about 15k feet lower and travelling about 30% slower.