Question: are talion and aragorn related?
Answer: Aragorn is a direct-line, unbroken, father-to-son descendant of Elendil through his older son and heir, Isildur, and Isildur's only surviving son Valandil. Talion would have to be similarly related to Elendil through is other son Anarion, and Anarion's heir Meneldil. There's no evidence of such.