What is the second save Aberforth did to Harry's team?

Question

In Harry Potter and the Deathly Hallows Part 2 (2011), Hermione speaks about Aberforth:

Hermione: He did save our lives twice. Kept an eye on us in that mirror.

What is the second save Aberforth did to Harry's team?

Answer 1

First save: He sent Dobby to Malfoy Manor to rescue Harry, Ron, and Hermione.

‘It’s your eye I’ve been seeing in the mirror.’

There was silence in the room. Harry and the barman looked at each other.

‘You sent Dobby.’

The barman nodded and looked around for the elf.

_{^{Harry Potter and the Deathly Hallows}}

Second save: He covered up for them when they accidentally set off a Caterwauling charm while apparating into Hogsmeade.

The Dementors had retreated, the stars were popping out again, and the footsteps of the Death Eaters were becoming louder; but before Harry in his panic could decide what to do, there was a grinding of bolts nearby, a door opened on the left-hand side of the narrow street and a rough voice said, ‘Potter, in here, quick!’

He obeyed without hesitation: the three of them hurtled through the open doorway.

‘Upstairs, keep the Cloak on, keep quiet!’ muttered a tall figure, passing them on his way into the street and slamming the door behind him.