'Roman archers often used flaming arrows in battle'. Did they though? It's pretty much news to me. Not that I'm that old.

Firing flaming arrows must be inaccurate. The flight characteristics change during flight. And it is only useful to set light to something inflammable which most armour of the period wasn't. I do know about the use of Greek Fire and 'flaming pigs' and carcass shot from engines. But I would say that flaming arrows is much more Hollywood than history.

But that Romans did have numbers of little oil lamps
in their dwellings. Quite common on Roman digs.