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Looking at those pics, it seems the coupler coming out was the result of the original chain failure, look at the gear it’s destroyed.
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It’s a narrow gear like the 21-22 mountain sleds .is the lower gear on the 2023 turbo a "narrow splined " gear like the 850 trail sled or normal width in the splines?
just ordered one and it looks from the vid that it can be installed without pulling the driveshaft which if that's true is prolly cheaper overall and less trouble than pulling the driveshaft, removing/replacing drivers, etc.https://tkicnc.com/product/g5-chain-case-retainer-w-speed-sensor/
The Video here explains it well and looks to be a good fix for getting the gear runout to a decent spec