Frasier sets his tie and jacket on the counter, side by side. In the next shot, the tie is on top of the jacket.
Carla says that all of her kids were conceived during Indian Summer. Lucia was conceived around the time of Father Knows Last (1983), while Ludlow was conceived during Whodunit? (1985), both of which aired in January. In Home Is the Sailor (1987) which aired in September, Carla was already noticeably pregnant, and twins Jesse and Elvis were newborns in Tale of Two Cuties (1988) which aired in January, indicating that they were conceived in the Spring.
Carla says that she has never gone more than two years without a pregnancy. However, her oldest child Anthony is 16 years old in The Groom Wore Clearasil (1985), by which time she has had six children, meaning she must have gone more than two years without a pregnancy at least once.