The combination ⟨oë⟩ is pronounced in the common way if accompanied by ⟨n⟩ (Samoëns /samwɛ̃/, an exception to This is certainly Citroën /sitʁoɛn/).
If a consonant is accompanied by the letter E at the https://bookmarks-hit.com/story18377141/little-known-facts-about-alphabet-in-french