Not at all irrelevant. The change of charge controller was solely to enable CCS, and it has been limited to 50kW on an EA 150kW station as well as in 2 250kW supercharger attempts.
I did not use the phrase "hard limit" because I have seen it peak to around 52kW, which maybe is a good sign, but it is odd that the number is in this range. On my CHAdeMO adapter, I never got 50kW and at most got 47kW. (That, of course, is probably because the station is putting out 50, but the car is only getting 47. Usually it got 43 on CHAdeMO, though.) As noted, my expectation would be higher for 250kW superchargers and 40% SoC, even with only 10 minutes of warm-up, but still more to be learned.