Possible Clues:

• Out of sync
• Engaged in sibling rivalry, say
• In conflict with a tenor taking chances
• Squabbling
• On bad terms
• A barber's in dispute
• Like two people fighting over whether a number is divisible by two?
• Disagreeing (with)
• Doesn't make sense with a temperature close to 23 down
• Doesn't make sense for dads to explode