"All in?" asked as a question, not a statement - ruling?

[youtalkfunny]

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In the context it is clear that it was a question (see the title).

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I'm not certain this can be assumed to be 100% true.

The title was written by the OP. What if the OP was Player B? Maybe it was clear that it was a question ONLY TO THE PERSON WHO INTENDED TO ASK THE QUESTION--it may not have been as clear to his listeners.

It's likely that if OP was Player B, that his words may not have come out of his mouth the way he intended. People involved in a big pot often focus their thoughts on the play of the hand, and don't pay strict attention to how they're communicating. The let the "AutoPilot" part of their brain handle the talking, and that doesn't always lead to coherence. I see this every night in the cardroom.

OP: were you Player B?