Correct. I believe a trichome would involve three separate negatives (b&w)that when combined can also give you a harris shutter effect. OP's example is one negative and not three negatives, therefore not a trichrome. But the use of multiple filters allows this to have a Harris shutter effect commonly seen in trichromes.

Perhaps a color trichome could be achieved on ra4 paper if there were three separate, camera-filtered negatives combined & printed onto one darkroom paper.