We had more than that - we missed several seconds when they were on the porch at Wolowitz's. Have no idea what his mom called him after Howard said she didn't want to see her "little bird leave the nest". Then missed what was said when Leonard's phone rang and they all walked off the porch.
Then again at the very end after the stereo kicked on. Although I could read Sheldon's lips when he said "NOW, she's jumping up and down on the bed." and Penny mouthed "Wow." Although all that was dead to us too.