Not a lot was known about what that would entail, until recently, when new and updated routers with HomeKit functionality began to hit store shelves. A few weeks ago, Linksys sent me its Velop ...

Home mesh networks ... plug into your router and another two satellites. You can buy extras, but you'd need to have a very large home for that to be worthwhile. Both the BT and Linksys packs ...

if you're already using another Linksys device like that and looking to upgrade, you could swap in the Hydra Pro 6 and relocate the old router somewhere else in your home for use as a mesh extender.

The Linksys MX10600 Velop is one of the mesh networking systems you can turn ... stronger for longer and further away from your main router (max speeds of 5.3 Gbps are possible).