1bent1 Venture-Lieutenant, Alaska—Anchorage |
TriOmegaZero |
Pathfinder Adventure, Rulebook Subscriber
As I read it, no.
Downtime wrote:
After each adventure that grants XP, you gain a period of Downtime before your next mission.
Confidante wrote:
Twice per adventure, you can call upon your contacts, either allowing you to attempt a Knowledge check as though you had a number of ranks in that skill equal to your number of ranks in Diplomacy or gain you a +2 bonus on the check.
So the Confidante is used during the adventure and the Downtime check is after the adventure.
1bent1 Venture-Lieutenant, Alaska—Anchorage |
Andreas Forster Venture-Captain, Germany—Hamburg |
If you want to be pedantic you could say it says "forgo your downtime" (which can be announced before the adventure ends), not "use your downtime to", and therefore allow it.
Personally, I'd allow it. There are other good uses for Knowledge checks in most scenarios, which you'd give up to complete a faction mission. If people want to focus on the role their faction plays for their character, I don't see a reason not to let them.