Question on rear crossover/heater pipe failures

[JWLR4]

I just ordered a rear crossover/heater pipe for my ‘11 LR4 and am wondering if there’s any solid intel on catastrophic failures for that part. I know the front crossover has a well documented history of catastrophic failure, but what about the rear? I’ve really only seen reports of nuisance leaking. Since there’s no portion of the assembly that inserts into the block, I’m assuming total failures are rare. Thoughts?

 

[jlglr4]

I do remember someone losing the rear pipe with fast coolant loss - can’t remember if it was catastrophic in the sense they lost the engine.