How to retrieve Web Activity records exported from Eloqua?

Summary:

How to retrieve Web Activity records published from Eloqua in CX Sales?

Content (please ensure you mask any confidential information):

We've implemented Marketing Activity exports in the CX Sales Integration app in Eloqua to export marketing activities to CX Sales (email sends/opens/click-throughs, etc). As for the current default, the app supports sending this data to only the Web Activity object in CX Sales. However, although we observed that some records were successfully exported, we're unable to retrieve these records in CX Sales. We attempted to use the Marketing Web Activity subject area to build a report in BI, yet the report always returned no results (despite the contact and the campaign records are synced properly between ELQ and CX Sales).