The young actor was 14 when his father died of a heart attack in Italy.

The hardest part of this whole process was watching the show for the first time.

It was an intense process.

Michael Gandolfini; James Gandolfini

Bobby Bank/GC Images; Craig Blankenhorn/HBO

But then Id also be seeing my father.

I think what made it so hard was I had to do it alone.

I was just sitting alone in my dark apartment, watching my dad all the time.

I started having crazy dreams.

That hit hard, he says.

The other scene is when Soprano was talking to his son A.J.

after a fight with him, and then says, I couldnt ask for a better son.

I just knew he was talking to me in that scene.

Read the full interview over atEsquire.The Many Saints of Newarkis coming in 2020.