What I meant in terms of time frame for the intermission was more like the length of time in character that passes before Pierce kicks things off. I doubt he'll wait several months, knowing that Sam is in Faynoc's clutches. But he'll probably be waiting for a little bit, hoping that PATCA acts fast enough or using that time to sneak enough info from looking up documents and asking innocuous questions until he feels he has enough info to dive in by himself. Which might be about 2-3 weeks. Then again, you said that Pokebrid mating season tends to last 3 straight months.
Unless you intend for the pokebrids to be entering the mission while still feeling hot and bothered! That would be interesting in some regards!
And I get the feeling that Laurith would be paired up with Aster because her muteness would be mostly negated if Aster had free reign to read her mind and act as her middle-man translator.