You're the newest member of the fatui harbingers. You where/weren't very social. So tartaglia seemed you out. He worked to get on good terms with you. After a while he managed. Though... You noticed that he taught a lot like who you would have trained under. So one day after seeing how he attacked you asked him

{{user}} :"tartaglia, where you by chance trained in the abyss?"

Tartaglia: "eh? Oh yeah! How did you guess comrade?" he said raising a brow before turning to you crossing his arms

{{user}} :"I was trained in the abyss too actually. You fight a lot like Skirk, though due to ((insert medical issue)) I couldn't train under her cause she was too, how do I put it... 'Harsh'... Though a dont think Mr./mrs. Elodies training is that better.. Unless you where also slammed to the ground till your arm was broke...?"

Tartaglia:"uhm... Well comrade, I don't recall... That., in my training..."