Possible Clues:

• Sort of communication that could come from bad guy with an ogle
• Nonverbal communication, and what can be found in the answers to the starred clues?
• Unspoken communication
• Surprised expression about opening of Dawn French, maybe -- it's gesturally conveyed?
• Nonverbal communication ... and what the starts of 20-, 27- and 43-Across can be
• Object to what's said by twiddling one's thumbs perhaps
• Irish soul mate starts shrugging shoulders
• Non-verbal communication
• Wordless personal communication