Alvin Lee’s Crazy “I’m Going Home” Slide/Hammer 5s

I’m struggling with getting the correct right hand technique for Alvin Lee’s famous slide/hammer lick from (of course) “I’m Going Home” from the soundtrack to the ‘Woodstock’ film.

One transcription says it is hybrid picked with a Down-Slide on the G string, Down-Hammer on the B string and then grabbing the high E string with the Middle finger. I don’t think this is correct.

Another guess from someone else is that it is sweep picking with all Downstrokes. This seems closer, but I’m having trouble achieving the right feel, but that may be because I just haven’t practiced it enough.

I like the feel of Down-Slide on the G string, Down-Hammer on the B string and then hopping over the high E for an Upstroke on the A note at the 5th fret of the high E, but I’m not sure if that’s what Lee did.

I’ve looked at many live videos of him playing that lick, but I just can’t catch exactly what he’s doing. The closest that I can tell is that he’s just sweeping with all Downstrokes.

Anyone have any ideas?