>>30066529There is literally no reason at all, in the entire universe, to set up HP Fighting for Z-Conversion Porygon-Z as anything other than a coverage move.
Then again, one should still check to make sure if HP Fighting even works.
In any case, Chansey is a special wall. Porygon-Z is a special sweeper. If Chansey can't wall Porygon-Z, it's not doing its job.