I do use braid on my marker float rod, but to an Amnesia shock leader, and on my pike rods.
For shock leader to Amnesia it is an overhand knot in the Amnesia, and a uni knot through and up something like here:
https://magazine.anglingactive.co.uk/the-best-shockleader-knot-sea-fishing/
I do lighter blob the knots to stop slippage.
Braid to braid is a pig, they can cut through each other, but again pike fishing my braid is tied to a swivel, which unless you tie straight through on your rods (spod) you can't do on fishing rods.