Jesse had a total of 16 flashbacks of Michelle or himself during the "Baby Love" sequence.
Chelsea Noble, who plays Samantha, became the sister-in-law of Candace Cameron [Bure] when she married her elder brother Kirk Cameron in 1991. Kirk appeared in "Just One of the Guys", the episode before Part 1.
At the end of part 1, the girls come into Jesse's bedroom asking about Jesse. They again walk in asking about Jesse at the start of this episode, but this time the girls are standing closer together, indicating the sequence was reshot.
This is the only time DJ and Stephanie speak directly to Gary. Even then, the characters do not share screen time while they talk.