I've no idea if it's them or not - it's difficult to tell in such a blurry video with people who you rarely see 'casual' - plus she's been unwell, seriously so by all accounts, so she's bound to look different.
However, KP have totally created this ridiculous circus - they could have just stuck to the 'after Easter' statement instead of continually playing the public for fools. Every other day there's been blatant bullshit spread by the media, undoubtedly with the palaces permission.
'Here's a grainy pic of Kate in a car...no? Ok, well look, here's a sweet Mother's Day pic taken just last week.....kill notice? erm, ok - well this definitely is a pic of the back of her head in a car with William....arghh now, I promise you, this taller, thinner, younger looking woman is 100% Kate practically sprinting from a farm shop in Windsor!' 🙄
It's all so contrived and a bit silly/sinister depending where you are on the conspiracy scale. Either release a 'thank you for all your well-wishes' video which will put the whole ridiculousness to bed - or stop sharing shit quality cryptic pictures and STFU till after Easter.
I do 100% know though, had this been Meghan the Sussexes would have been roasted alive and no-one in the media would be calling for kindness towards her!