Is it possible to setup Level Streaming using multiple landscapes?

Good evening everybody,

I want to ask you guys how it’s possible to make a terrain/landscape transition between multiple Level Streaming landscapes? It’s difficult to have exact the same height of the 2 maps with a terrain inside and make them have a smooth transition. Is it possible to connect 2 landscapes/maps so they haven’t any holes between, or is it possible to cut a piece of a huge landscape part and save it as a second map/sub level, so I can add later the level streaming function? Hope you guys understand me what I mean.

Sorry for my English.

best regards