Overt Conflict is basically conflict that's out in the open for everyone to see...Meaning it's openly visible and not concealed.

Everyone's wrong. Houndour evolves into Houndoom at Level 24.

The last person who answered this question is wrong. Infernape learns Close Combat at Level 41, Flare Blitz is the last movie it learns by Leveling up at 57 and as for Thunder Punch, sorry to disappoint you but that's just one of the many moves Infernape can't learn...Not even by TM.