I imagine you all know this, but I am told it is true that Julian Smith told cabinet that the only way to get the Brexit deal through the Commons is for the Government and Theresa May to agree either to hold a confirmatory ballot or to commit to a customs union.
Which sounds to me like the chief whip telling the PM and ministers that the only way to secure Brexit is to ignore dearest preferences of the majority of Tory MPs and get her Brexit ratified by relying on the official opposition.
Which would probably destroy the Tory party. And therefore maybe he was in practice saying that there is no Brexit without a General Election (presumably with a new Tory leader). Apparently the PM did not make any comment on the chief whip's briefing.