The report date range differs from the attribution lookback. An enquiry reported this month may receive credit from an interaction that occurred last month.
GA4 acquisition key events first_open and first_visit default to 30 days, with seven days available. Other key events default to 90 days, with 30 or 60 days available. Check engaged-view settings separately.
These are not universal Google Ads data-driven attribution options. Changes apply going forward. Inspect the current product settings; a shorter window is not inherently more accurate.