The only similarity is they are both tall and cylindrical. The shape of the neck, the cap and the position of the cap (being off centre), and the inclusion of a lanyard are totally different to Dopper.
Huel designed their own shaker, and in the thread to promote it, you post a picture of someone else’s, claiming they have used it for inspiration?
But the inspiration is there, and I have said in this forum years ago that the Dopper system is one of the best of the market, so if there is any inspiration, they have looked into the best designs, and that is great. The bottle tap its great with the low neck and the inclination will help to drink. The footprint seems oval and that is good for carring it in the backpack.
Also making it a 3 parts bottle with a wide open for the powder is great like Dopper.
I really am looking forward for the reveal. One of the most exciting news as a hueligan since 2017
because its Tritan - very hard/durable/glossy. lasts much longer than conventional shakers. If you have had/used a shaker like a BlenderBottle Pro - these are made of the same material for your reference - as are the jugs in most high end blenders.