One of those "might be of interest to some" links.
Guy Halsall has posted some of his second-year undergraduate lecture material on his blog. They are from short virtual learning sessions but do cover his thinking since he wrote "Barbarian Migrations and the Roman West".
https://edgyhistorian.blogspot.com/?m=0
thanks Nik, always find these things useful and I actually quite like Guy's stuff
He has recently updated these (same link gets you basically there) for "Organising the Late Antique World"
thanks for the update Phil