If any one is interested how to access the event_log for DLTs that are writing to different schemas:
The approach that was described above was not working anymore - at least for us.
But we discovered this post:
https://stackoverflow.com/questions/79432901/access-dlt-event-logs
And the provided answer did the trick:
"Add to the Pipeline Settings (JSON not UI):

"event_log": {
    "name": "<table_name>",
    "schema": "<schema_name>",
    "catalog": "<catalog_name>",
    "visible": true
},