Inline Application support for Advanced List Header field?

Am I able to configure an Inline Application to be part of the List view Header fields for an Advanced List application?

These fields are typically used for filtering but I have a UX I’m going for that has an import feature. So I want to pin the Import App above the list form of a Adv List form to reduce clicks.

I can mimic this with a Standard App using 2 Inline Applications but wondering if I just missed some setup for why the Object wouldn’t show when configured as a header field

No, that is not supported right now.