All Disney water park transportation to/from Typhoon Lagoon requires transferring at Disney Springs. For Blizzard Beach, the transfer is at DAK.
There are a couple of resorts that have direct routes, eg, CSR and the All Stars have a direct route to BB, I can't recall if TL has any such direct routes off the top of my head - but those are anomalies and the large majority of resorts require the transfering.