This is such a great example of how important written communication is. Misalignment happens all the time - on the problems, the solutions, the details and even the language we use. So, as soon as you sense there's misalignment and nothing is written down, the best move is to put it into words.
At least this way, you're making your position clear.
Invite others to review, comment and challenge your perspective.
Get everyone on the same page before moving forward.
If you don’t, that misalignment will come back to bite you later. The cost will be much higher.