The important thing to remember about No.6 is the constant sense of foreboding that's being sewn in. No.5 ends with Jack confidently (lying) about how what's happened before definitely won't happen to him, and immediately we segue into seeing Danny talking to Tony about why he doesn’t want to go to the hotel.
No.6 is two scenes spliced together. First we have Danny in the Torrance bathroom talking to Tony (through the mirror) in the Torrance bathroom, then we transition into seeing Wendy talking with Jack while he’s still at The Overlook. Then we go back to Danny to see a visual sequence of why Tony doesn’t want to go.
The sequence gets a ton of attention, and it should, but the subtler messages also carry merit: Danny is heard playing with water, transitioning to Wendy washing dishes. This shows Kubrick’s use of sound as a transition device, and that Danny /Tony are aware to his parents’ activities.
Kubrick’s use of sound plays heavily along with the visuals, and both are linked to other scenes.
Stylistically, the Boulder Kitchen is reflected in No.40’s usage of Summer of 42.
Scenes that take place in a Bathroom are also scenes with fear and vulnerability.