Dungeons - Friendship Bonus

Royalist

Hi,
Is there anything significant to the levels in the friendship bonus? Is it worth doing lvl 2 (12 more rooms) from one person rather than 6 rooms with two different peeps?
Appreciate the help, thx

SandeepS

Less time to do 2 x 6 rooms than 1 x 6 then 1 x 12