Shouldnt be any HK groups in 40
What does this group comprise of ?
Wild guess that its either the escorts - convoy had an AI sub or 2 that they have sank and are still adrift of the convoy
Or
Its a TF which by lucky chance is on the same route
Later on in the war HK groups do sail some hours behind a convoy and so some hours in front of the next
As they did
But not in 40