I wish there were some link to the study in the article, I tried to find it in the original Financial Times article but I got paywalled. This is really awesome though, I hope further research is shown because I'd love to hear more about how this differs from the previous methods of addressing Alzheimer's.

I guess

Both lecanemab and donanemab are based on antibodies against amyloid, one of the toxic proteins that build up in the brain as Alzheimer’s proceeds, but they worked at different stages of the process, Oakley said. Lecanemab targets amyloid as it begins to form fibers in the brain while donanemab is active at a later stage, when the fibers have clumped together into larger accumulations of plaque.

Is as close as we're getting for now haha

Edit: TheOakTree found the study for those who want to read more!

Direct link to study.