Thanks for clearing that up.
That sounds far more logical, though may be irritating for the other skyteam members in LHR T4. I fully expect VS short haul will join eventually, partly cause T1 won’t survive and partly cause split terminals must cost VS quite a bit. T3 will surely be overcrowded though, if 9+ daily DL, 13ish VS, 5 QR, 2 MH plus more all move in.
Btw, if VS have 4 daily JFK and DL 3 daily, then that is not far from BA/AA who operate around 11 (?).