Have you already been using Attribution IQ? That might be the closest you'll get at the moment.
This doc: https://experienceleague.adobe.com/docs/target/using/release-notes/known-issues-resolved-issues.html... has a section that reads:
When using Target activity impressions and conversions in Analysis Workspace, apply the “Same Touch” Attribution IQ model to the metrics to ensure accurate counting. To apply a non-default attribution model, right-click on the metric to modify Column Settings > enable Use non-default attribution model > select Same Touch model. Without this model applied, the metrics are overstated.
At some point in the future, I would hope users will be able to add the 'Activity Impressions' metics as a segment, to then segment on pages, and visits that had a Target Activity Impression.