CRM comparison ("сличение") screen — two independent, read-only reports, no auto-actions:
- Directory-wide duplicate emails: contacts sharing the same email (across the whole CRM, not scoped to any list), with a count and an expandable drill-down to the actual contacts.
- Cross-list overlap: pick 2+ active lists, see the contacts with an active membership on ALL of them.
Neither section offers to merge, remove, or otherwise act on what it shows — this is purely a "here's what overlaps" report; any consolidation is a manual, human decision the operator makes from the linked contact/list pages.