In Funnels, Excludes remove visitors from your funnel if they take unwanted actions during or before their journey.
For example, you can exclude visitors who visit certain Pages or trigger specific Actions. Your funnel insights would reflect this exclusion, and will not include those visitors.
There are 2 options for Exclusion Criteria:
Before & During Funnel: excludes visitors who see/do these items anytime in their sessions before funnel completion
During Funnel Only: excludes users only if they see/do the excluded item within the funnel steps
You can use AND/OR logic to combine conditions. A funnel step and an exclude rule cannot reference the same content, as they would cancel each other out.