So, perhaps, THAT was the meeting they might have had in the wheelhouse/chart room, as so often portrayed in film: Capt Smith and all 6 of his subordinates getting their stories straight, and Smith saying "Now, men, whoever survives this, this is the story we're going to go with. I'm going down with the ship. anyone who wants to avoid the harsh inquiries that are sure to come, are welcome to join me"
Might explain why all the people who could answer the "big questions" died: Smith, Murdoch, Wilde, Andrews....might as well throw in Chief Engineer Joseph Bell...
It would not necessarily had to have been that nefarious that night--though it could have been I suppose. I guess Lightoller's granddaughter thinks it was. Also, along those lines Ismay would I think have been a party to that conversation, nefarious or not. He did survive, along with at least one senior officer who should, by all rights, have known a lot more than he claims to have known (see our discussion in the lifeboats thread).
Just keep in mind they had 3 days on Carpathia to discuss this, and probably a day on land before the first inquiry. This also brings up the prickly issue of Ismay wanting to get Titanic's crew back aboard a vessel immediately.
After that they'd have had an entire crossing before the bot inquiry.