And if there are no Greeks, why the Trojans can converse with the Mycenaean without translators in the Iliad
The Illiad is epic narrative verse, not prose reportage. It is (whisper this) largely made up. ‘Homer’ may not have existed as a single entity, or lived centuries after the Trojan War. Or both.
"I go online sometimes, but everyone's spelling is really bad. It's... depressing."