The Dungeon Delver feat states that you have advantage to notice secret doors. According to the rules for passive checks (pg. 175 of the PHB), you are automatically given 10+relevant base score and if you have advantage you get an additional +5 bonus to the passive score.
The Observant feat states that your passive perception and investigation scores have a +5 bonus.
Does this mean that a character with both of these feats uses a passive score of 20 + Wis mod + possible proficiency when checking for secret doors? Or does something prevent these two feats from interacting in that manner?