Chronological Ordering of Collection in the Sidebar

Alongside the Manuscript folder, I maintain a separate folder for a Chronological Event List. The documents in this folder are sync’ed with Aeon Timeline. I’d like to see them ordered in the sidebar by the same Start Date metadata field that links to Aeon. I thought I could achieve this by making a dynamic Collection. But although the Collection offers the opportunity to sort by Title, Binder Order, or Date, the Date in question seems to be locked to Date Created.

Is there any way to sort the documents in a Collection, in the sidebar, by a selected metadata field? I know I can use the hooked arrow to pop them into an editor and order in Outliner view, but it’s the sidebar order I’d like to affect.