Related Clues:

• Drops in on
• Notices
• Gets it
• Takes in or takes out
• Consults
• Catches, as a concert
• Finds understandable
• Catches a glimpse of
• Pays a visit to
• Gets a glimpse of
• Matches, as a poker bet
• Is a spectator at
• Goes to visit
• Matches, as a bet
• Responds to 47-Down, maybe