Hmm okay. Thanks for the input, folks.
Asking testing-proposal style clarifying questions seems like converying information, ie "I think your proposal is invalid".
If I was @Facilitator I'd have the right to do so 'at any time' but I do not see how I can request that the @Facilitator do so.
Waiting for objection/integration seems like a waste of group time to have gotten that far before the proposal is tested.