It's unclear to me how Overture manages to "license wash" OSM data here.

> Transportation: The OMF’s Transportation layer represents a worldwide road network derived from data in the OpenStreetMap project. This community-built data has been recast into the Overture data format which provides consistent segmentation of the data and a linear reference system to support additions of data such as speed limits or real-time traffic.

The OSM ODbL is crystal clear that OSM contributors have to be credited. I don't believe that CDLA Permissive v2.0 magically allows Overture to bypass it.

--EDIT: I missed that they're using different licenses per dataset, the transport theme is OBDL, which I'm sure will trip up users who are not careful.