I am trying to transcribe a chord progression that appears here (timestamp 0:44).
I'm having trouble naming some of the chords below. I think the last two are correct, and function as the ii-V of B major. (It is actually a deceptive cadence because it leads to a G#m chord, which starts a G#m C#7 F# D# chord progression which is the common ii-V-I-vi in F# major.)
I'm having trouble understanding the first two chords. I've named them using slash notation, but I would like to rename them without using slashes. I could call them A#m11 and Am11 respectively but that still does not really help me understand their harmonic function. The chromatic descending bass line is very interesting to me, but since the chords seem to just move completely in parallel, it doesn't seem to be a secondary dominant (or something) disguised with inversions.