I'm on the train and have just finished teaching Clem to shoot and talking to everyone, but the game will not let me progress.
As far as I can tell from watching a walkthrough, once you have the bottle of whiskey, you should be able to share a drink with Chuck and then Kenny to progress the story.
The problem is, I got the bottle of whiskey before almost anything else on the train (even before training Clem). For whatever reason, I have the bottle of whiskey, and cannot get the story to progress.
Edit: To be clear, I have exhausted every single conversation topic. The first time I talked to Chuck, he mentioned drinking and asked if I had anything to drink. My character automatically said "Nope" even though I DID have the bottle. Now, after finishing everything else, he won't mention drinking again. I say "Hey", he says "Yo" and then it cuts the conversation off.
What the hell do I do?