[Advice needed] Selling our product to our first major enterprise customer!

Hi everyone, I'm building JoinJoyfully, which is an affordable mental health perk for employers. I pitched a massive company last week (HQ'd in the UK, but I was talking to the NYC office,) and they liked my offering, but said they need to ask internally about how to tackle any potential "compliance issues."

The thing is, the person who's been championing our efforts within the company likely has stepped on one of his colleagues toes in order to get us to this point. It's not clear who the ultimate decision maker is at this stage, so I'm wondering if anyone has thoughts on any steps I can take to push things along?