There's a big caveat on those lists of briefings, of course:
Certain briefings and reports have been omitted from this response where there are matters under consideration, forthcoming decisions and announcements, or where an individual’s privacy would be compromised by the release of the briefing title.
But none of these circumstances apply. The decision to delay has been made, the issue is no longer under consideration, there's no announcements planned (SSC never announced the delay, except in a buried section of their own website), and there's certainly no issue of privacy. So, taking the Minister at her word, and assuming that she's not lying to Parliament for shits and giggles, she was not briefed. Which raises the obvious question: is the Minister totally out of the loop? How the hell are these decisions being made, if not by her?
I have an OIA due back this afternoon from SSC which might answer some of those questions. And if it shows briefings to the Minister which weren't on Bennett's lists, then I think someone else should be asking some very pointy questions, via the Privileges Committee.