Was this an ad that showed up during the playback of another video, or was it an ad that showed up as a video on the home page or on the suggestions for some ot

Was this an ad that showed up during the playback of another video, or was it an ad that showed up as a video on the home page or on the suggestions for some other video? (I've never used YouTube Premium so I'm just assuming that it has a similar home page and suggestion format).