loading of data on application startup shows no user feedback

I have got a WD application that loads backend data via an aRFC model on startup. Unfortunately the animated loading image is not shown in that case. (To be complete there is nothing shown but a blank view area.) So there is no user feedback on what is going on or even if there is something going on at all.

I have seen there might be a solution with using a TimedTrigger but that will cost an additional second, because the minimum trigger delay is 1 sec. (Data loading time depends on the user and ranges from 1 to 10 secs.)

Is there any other way to show user feedback in that case? Any other way to trigger data loading after first request cycle, so the application would be rendered before the data is loaded?

Kind regards

Christian