Yeah, that's a pretty bonkers setup, though just keeping them together makes sense. Still, that's a long chain ring bolt! Likely borrowed it from those Sugino AT guys....
I'm prepping bikes to sell as a part of a larger effort to reduce the fleet size. It of course will not be without its "stair steps" down via building or perhaps acquiring other bikes to sell or keep, but the goal is three plus a rain bike....plus a track bike when it very eventually gets built up. The three "keeper" bikes are fully built and/or modified to permanent status. The rest of my work is selling either vintage parts or building up complete bikes--vintage frames with more modern parts--to sell to very happy tall riders as that market is continually underserved. I run my tall bike orphanage with tons of love and effort, carefully sending new bikes out when they are fully realized. I am sad, but happy at the same time.