Second funnel during the sinking?

I want to know because in the james cameron movie,the second funnel doesn't to fall before the breaking or in the honor and glory animation,it's acutally broke down so what happened?

thanks for your answer!

Kyle Naber

It collapsed as the first did. I think Cameron showed it sink with the ship because that’s how Lightoller remembered it, but those like Jack Thayer saw it go down.
I don't think the breakup would cause it to fall, but it would fall after the breakup and the fall of the 3rd funnel, because the aft expansion joint would open before the breakup.