Sram X.9 derailleur question

Quoted message said:

I am currently running a sram X.9 shifter/derailleur setup on my S/C
Blur. I recently upgraded my crankset to an XTR, which has 46 teeth
on the big ring. When I installed the chain, there was a 44 tooth big
ring (XT) on the big ring. I have heard that there was a problem with
this particular derailleur breaking when the chain is a little too
short. The shifting is flawless right now, but I don't want any
problems down the trail. Should I replace the chain with a longer
one? Any info is appreciated, TIA

Well, hopefully you can avoid riding in the "big-big" combination, anyway --
it's an extreme cross-chain -- but just to be safe put the bike in a stand
and see if you can still turn the cranks in that combo. (Gently!)

If you can't turn the cranks (things jam and would break if forced), then
you should either add a couple of links or just run a new chain and save
this one for future use on a different bike or with a smaller front ring (or
big cog in back).

Bill S.