Board Thread:Questions and Answers/@comment-12.47.208.50-20141207082001/@comment-1959787-20170330044549

The one that plays during the timestamp you listed (or rather, from 14:28 to 16:34) is goodbye, again and again from the Phantom Bullet part of the soundtrack.

The later track you actually meant (which is what I expected as soon as I saw "Episode 22") at 17:00 is moon and shadow, which was also used in Extra Edition. That track wasn't on the original release of the OST, and was one of about 15 previously unreleased tracks included in the Sword Art Online Music Collection, released about a year ago.