Does Drinking Coffee With an Iron Supplement Affect Absorption?

I’ve seen conflicting advice about whether coffee interferes with iron supplements. Some people say timing matters, but it isn’t clear to me whether the concern applies to every type of iron or depends on someone’s diet and health situation.

Does having coffee with an iron supplement meaningfully affect how much iron the body absorbs? I’m looking for a clearer explanation of what factors matter and when it would be sensible to ask a clinician or pharmacist about timing.