The 2022 Passport HPD side door trims will fit the 2019-2021 Passport. I will be installing them too, probably right after you if I can find a set, but laying hands on a set might be tough because 2022 specific parts are not so common. I'm presently searching for a reasonably priced 2022 rear bumper to replace my 2020 rear bumper but online parts shop are not listing 2022 Passport parts yet.Going to be the test subject again and see if the HPD side door trim for the 22's fits the 19-21 Passports.
I checked with honda and all 4 doors are the same exact part # from any year so i think they should fit without the fender flares. Will update once i get them and see how the install goes.