My understanding is that there are two distinct parliamentary votes – one on the triggering of Article 50, and one on the final settlement with the EU. The former starts the mandatory two-year withdrawal process.

I assume you're talking about the triggering of Article 50 - the decision of the Supreme Court case which we are still waiting for on whether Parliament needs to vote before it can be triggered or the Prime Minister can trigger it using Executive Powers.

So possibly, but there is talk of Teresa May rewording the Bill and forcing it through. Democracy eh!