Having used the current LGW-NQY route I can say with fairly good knowledge that the service carries a decent proportion of connecting passengers, certainly on the morning and evening rotations, I can’t speak for the middle one as iv never used it.
But considering they codeshare with BA, VS and EK on the route it’s not surprising the see bags appearing at NQY from all over. I’m certainly not the only one down this way that uses the route to connect put it that way
cs