In substitution-based jinās, the changed consonant may occur initially, medially or finally. Position is a separate analytical question from whether the two articulation points are near or far.
«وَهُمْ يَنْهَوْنَ عَنْهُ وَيَنْأَوْنَ عَنْهُ»
They forbid others from it while they themselves withdraw from it.
«ينهون» and «ينأون» show a recognizable phonetic relationship between two different verbs: forbidding and distancing oneself. The audible likeness emphasizes their coordinated yet distinct actions.