There was a time, well before he left home, that Gabriel remembered when the rest of the Host laughed with him. It grieved him deeply when he began to notice that his brothers and sisters forgot how to laugh. While Castiel didn’t exactly laugh with him, he was a little gratified to see his brother smile. It was an encouraging start.

He raised an eyebrow at the revelation. Given the fight that his little brother was getting involved in when he died, it didn’t take much for Gabriel to surmise how Castiel met his end. “Lucifer, huh? Sucks.”

The curiosity was going to drive him to distraction. He wanted to know what had happened, and how those two mortal goobers managed to stuff Lucifer back into his prison. But his younger brother was right; this wasn’t exactly the right place to start hashing over a few millenia of family dysfunction.

Instead, he looked around, "So what do you do around here once you get let out?"