No interactions present.
Looking at the clip, I don't see any reason to think that one is a recent fledgling. They both look like mature females to me (at least, birds born last summer at the latest). Recent fledglings have very loose feathers and appear 'softer'.
My Flickr photos...
Lat/Lng: 51.948, -0.282
OS grid ref: TL181291
Back garden, feeding on wild bird seed