Hard to believe as it only comes from 2019, I dont see how they wouldnt have the HQ-22 conducted itself against the J-20. Also the S-300PMU-2 acutally is worse at detecting stealth targets than Iranian domestic systems. F-35I aircraft where tracked and shot at 4 times over the entire iran isreal war, yet everytime the missile was launched it was most probably spoofed by the F-35's EW systems or shot at a decoy.
