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Replacing the heater hoses with something more restrictive wouldn’t have solved the problem, because there would still be an HVAC box with incorrectly sealing blend doors, and an HVAC module reading sensor information incorrectly.I generally have no interest in participating in internet squabbles. I also do not claim to be an automotive engineer or to have "worked ~50ft from where the HVAC was designed", but I do have a simple question for Streetsweeper. Do you really think it is cheaper for FCA to do the repair they are using than to engineer a simple to install restricted hose replacement?
Example:
The 2019+ HD Rams with 6.7 Cummins and 6.4 hemi have the exact A/C same issue as the 5th gen 1500s with 5.7 hemi, eco diesel, and pentastar engines. The 2019+ HD Rams use the exact same supply and return heater hoses as the 2014-2018 HDs with their respective engine options. Those model years HD Rams did not have the A/C issues that the 2019+ Rams have. The only things in common between all engine options of 5th gen 1500s and 2019+ HD Rams that differ from 4th gen Rams is- they all received new HVAC modules, redesigned HVAC housings with a separate distribution box, and 4 in duct temp sensors that the HVAC module uses information from, along with the usual cabin temp sensor and solar sensor, to determine what positions the blend doors should be in.