Possible Clues:

• Meeting extra-terrestrial in sport centre - who'd believe it!
• Perfectly matching
• Corresponding to a hundred and twenty-one, by the sound of it
• Direct
• Like intimate combat in time immediately before start of lunch break?
• Type of ratio
• Simple ratio
• Like an intimate conversation just before lunchtime?
• Come face-to-face with12-hour shift?
• Kind of confrontation