What a pathetically bad …
What a pathetically bad "test." Did you ever stop and consider that if the car added 15.58kWh in 17 minutes, it wasn't actually charging at 120kW? This is BASIC math. The car was charged at an average rate of 55kW. And did you ever stop and consider WHY that might be? Of course you didn't. We'll, I'll tell you... You plugged in at a relatively high state of charge of 69%. NO ONE taking a road trip is going to fast charge when they're at 69%. Why would they? Do you fill your gas tank when you have 2/3 left? 99% of the time, no. Perhaps you would if you are trying to get cheap gas before you travel to a high cost area, which is rarely a consideration for EV charging.
And why would you ignore the most prevalent make of EVs in the market for this? The vast majority of Tesla's superchargers deliver 250kW, and all Teslas made in the 6+ years can take 250kW.
The real world, most common example is a Tesla hitting a 250kW supercharger with 10-20% battery. Why don't you try that test instead and then see if you can outrace it to put 50% or more back in the pack? Good luck with that.
Just for grins, I pulled up several recent charges in similar real world scenarios on recent road trips:
10 minutes, added 39% - 26 kWh
3 minutes, added 17% - 10 kWh
16 minutes, added 51% - 34 kWh
9 minutes, added 30% - 20 kWh
14 minutes, added 45% - 30 kWh
11 minutes, added 29% - 19 kWh
9 minutes, added 31% - 21 kWh
17 minutes, added 52% - 35 kWh
So... try again, because you failed.