Sasha's attempted sequence was her triple toe followed by her first triple Salchow (elements #6 and 7 on the score sheet), the same as in her program at Worlds last year. It is clear from the tape that she flubbed the intervening connecting step, so the tech specialist called it as two separate elements. She got full credit for the two jumps separately. In fact, it came right at the two minute mark, so the second jump (the Salchow) received a 10% bonus, but the first one didn't, even though they were olnly a second or two apart.
If she had done the connecting step properly for a sequence, then it would have been scored at only 70% for both jumps of a sequence.
However, like you say, since it was not scored as a sequence but rather as two separate jumping passes, that used up her quota of seven passes. So when she did her solo triple Salchow at the end, that didn't count and received 0 points as an extra illegal element.