Related Clues:

• 20-20, say
• Band together
• Haberdashery buy
• Conglomerate
• 50-50, say
• Create a whole?
• What 21-Across 51-Down is
• Have no loose ends?
• Get even?
• Share first, e.g.
• Link together
• June gift, perhaps
• Marry
• No-win situation?
• Even score