How would you rule on the following hypothetical situation?

"Two Smuggler (Pilot) PCs are flying in a YT-2400 acting as Pilot and Co-pilot/Engineer as per the ship description. Both PCs have the Defensive Driving (p.134) and Tricky Target (p. 145) talents. Defensive Driving is a ranked passive talent that increases the Defense in all zones by one for each rank. Tricky Target is a passive talent (unranked) makes the vehicle count as having one lower silhouette when attacked."

Do you...

a) Allow both PCs to gain the advantage of their talents and allow them to stack.

b) Allow Defensive Driving to stack since it is a ranked talent, but not Tricky Target since it is not ranked.

c) Allow only the main pilot's talents, because the talents both state "Any vehicle the character pilots..." and co-pilots don't count.

Note: While part of this answer does depend on how you rule on the topic of co-pilots performing pilot-only maneuvers based on the "some ships have multiple pilots..." line on p. 232, please let's not go down that road.

I'd go with C as there is only one person flying the ship, or "driving the bus" as my character calls it.

This is an opinion.

I also would lean towards answer C. I think the co pilot rules are pretty clear and believe the multiple pilot line is about ships of CR90 size and larger.

I certainly wouldn't allow them to stack, given the precedence that Armor doesn't stack, and defense sources do not stack unless specifically called out. Mostly, I would go with option c, but I think there can be an argument that with co-piloting that whoever has the highest rank of a given talent could use it.

I think that if you had two PC's that want to be so focused on space combat as to both go down the pilot path then I would go with option B. The only other options to take advantage of their abilities is to trade off piloting or buy a second ship. Then again it really comes down to what you and your group find fun.

Ship combat side bar talks about the Pilot making the 'Pilot' checks, seems like a good indication they don't stack.