instagram_organic_impression -- the reel in front enters the viewer's
viewport. The Reels viewer's own shape (android-451/reels-tab-watch-ten,
reels-viewer-swipe): the chaining inventory source, the viewer and chaining
sessions, the reel's position and compound key, and the app's flattened
impression struct (its many unused fields are the recording's exact nulls,
which the schema pins). Values come from the answer's media facts and the
viewer's session; nothing is drawn for a field the recording does not pin.
instagram_organic_impression-- the reel in front enters the viewer's viewport. The Reels viewer's own shape (android-451/reels-tab-watch-ten,reels-viewer-swipe): the chaining inventory source, the viewer and chaining sessions, the reel's position and compound key, and the app's flattened impression struct (its many unused fields are the recording's exact nulls, which the schema pins). Values come from the answer's media facts and the viewer's session; nothing is drawn for a field the recording does not pin.