In which order are these data components processed?

The order in which these data components are processed is page code > VISTA Rules > Marketing Channel Rules > Processing Rules. This means that page code is processed first, then VISTA Rules are applied on top of page code data, then Marketing Channel Rules are applied on top of VISTA Rules data, and finally Processing Rules are applied on top of Marketing Channel Rules data.

References: https://experienceleague.adobe.com/docs/analytics/admin/admin-tools/channel-manager/marketing-channels-overview.html?lang=en#data-processing-order https://experienceleague.adobe.com/docs/analytics/admin/admin-tools/channel-manager/marketing-channels-overview.html?lang=en#data-processing-order