You have the solution - maybe You’ve over looked it, or I’m not understanding your goal properly.
When You jump from Scene “NYC1” to “NYC2” You have a timeline action “Jump to Scene” at the end of “NYC1”. This timeline trigger is missing from the end of the timeline in “NYC2” (taking You to “NYC3”).
BTW: I had a laugh when I saw the image “LivingRm2” - an image I took in a friend of mine’s home in Marin County, CA. No problem that You used it - it was just a surprise to see it, especially in NYC ;->