[TimovieMan]

TimovieMan awakes from his slumber and realizes he may need to look at this with a fresh perspective. Why hadn't he looked at the lyrics of those two songs yet? The answer for that "down doobie-do down down, comma comma down"-thingy was in the lyrics, so maybe this time it'd be in the lyrics again.

And lo and behold: the lyrics to 'Hey Jude' contain a lot of "na na na"-singing. We've already established 'Na' as being the symbol for 'Sodium' on the periodic table, so the key is to be found in the last few minutes of 'Hey Jude'...

TimovieMan has obviously been focusing too much solely on the relationship between the "down-comma"-segment and the "[Sodium11...]17" segment, and not focusing enough at all on the songs themselves. There is no link to be found between those two hint-segments. The first part is simply for the first song, the second for the second song.
It all makes perfect sense now!

Before a 'Hey Jude' is sung in the song, there are exactly 11 na's to be heard, so the crossed out word should be "hey Jude".

But we also need something that equals 6, or 17, and that's really nowhere to be found. There is however one instant in the song where the lyrics are:

Na
Na na
Na na na na
Na na na na
Hey Jude
(Jude Jude Jude Jude Jude)

That makes 11 na's and 6 Judes. Perhaps this section of the song is the key? TimovieMan surely hopes so, because otherwise, he's out of ideas again...