I feel like this intonation pattern is common, so I figured I better get it figured out.
I believe this is related Pitch accent in combination with the を particle, which is about when accents get blurred, like this I believe https://vocaroo.com/1owm8mvuT0AX 「じゃあ、左のコインをとって
」
But in https://vocaroo.com/13Fy2BfTB7dw, when he says 毎回 (which is unaccented), it sounds like a different intonation pattern. It should be 「まいかい{LHHH}」 in terms of pitch accent. I sense it sounds like 「まいかい{LHH}」, where the last い carries some intonation.
Or could it just be confusion with the vowel in that last mora being lengthened? Or just loudness going down and I'm confusing it?