It looks like a kitchen hack using a large zip-top plastic bag and a cooling rack (or oven rack). The person is sliding the rack into the bag, likely to:
- Coat or marinate food evenly (you can put meat/veggies in the bag with seasoning and use the rack to hold or separate pieces).
- Keep things mess-free while applying oil, marinade, or batter.
- Possibly prep for baking—placing food on the rack and then transferring it cleanly to a tray.
The two images appear identical, so there’s no “difference”—just demonstrating the same step.
If you saw this somewhere and want the exact purpose, tell me where—it could be a specific hack like easy marinating, breading, or even freezing portions neatly.