Hi Joe,
We can’t really analyze the unresolved “F” in the 2nd measure as part of the C7 chord. If you analyze the entire phrase you’ll notice that Christian wasn’t thinking over the II-V changes. He was thinking over a I6 chord throughout the entire phrase. Try playing it against an F6 chord and you’ll see! This is characteristic of the blues and a lot of swing era solos. After guys like Bird, Dizzy and Monk came on the scene and defined bebop, this changed and the actual changes were emphasized. I believe on guitar, Barney Kessel was among the first to reflect this evolution.