Finished before coming to this forum, unusually, though I had to scan Crossword Solver's lists of possibilities for 13a and 22d, joint LOI. FOI was 9a, which then helped with 2, 3 and 4 and got us off to a flying start. COD perhaps 6a: I couldn't think of an 8-letter anagram with only 2 vowels until I had most of the crossers, ir seemed unlikely.
One of my fastest solves ever, I think, as I only really started this afternoon.