Judging by a few factors within the episode, it appears "The Great Spontini" appears out of order during its air date and subsequent DVD release order.
1. Based on the opening credit sequence at the end of Season 2, screen shots and clips from this episode appear, implying it was filmed to fill as an early episode, possibly as one of the first in this season.
2. In this episode, Al breaks his handlink by hitting it too much when it refuses to work by failing to supply Sam with information. He later has a new multi-colored handlink, which first appears in the episode "The Boogieman" without explanation.
It would seem "The Great Spontini", chronologically, would take place between "One Strobe Over the Line" and "The Boogieman".