In a face-to face meeting cross talk occurs when a member speaks out of turn, or a member comments on, or interrupts another person's sharing.
In an electronic meeting cross talk occurs when a member directs their share directly to another member's share rather than sharing personal encouragement, strength and hope (ESH) on the daily topic. Sharing with another person within the meeting sets up a meeting within a meeting. Please remember that in Al-Anon we keep the focus on ourselves and not the alcoholic.If you wish to share with another person off topic it should be done one on one through a personal email.
I really liked their description of cross-talk becoming a "meeting within a meeting".