Waiting in the Pumpkin Patch

I am watching "It's the Great Pumpkin, Charlie Brown" and am struck in this my 30-something-th viewing (The program first aired in 1966) by the juxtaposition of three story-lines: (1) Linus and Sally waiting for the Great Pumpkin in the pumpkin patch; (2) Snoopy, as the World War I Flying Ace; and (3) the rest of the gang trick-or-treating and partying.

Is my attempt to link them something akin to the preacher's attempt to get the Old Testament, New Testament, and Epistle reading all to make sense in a 3-minute sermon?

What is the link? Maybe I need to wait for the next broadcasting of "It's a Mystery, Charlie Brown" to find out!

(For those concerned about my sanity, NOW I am watching the 3rd game of the World Series)