I know this might sound wrong, this is because I just recalled it from when I first began lucid dreaming. Your dreams get progressively longer. Your body starts out with 1 minute dreams when your REM cycles begin. At the end of an 8 hour sleep period they are 1-2 hours. Correct?

Ok. So the person who introduced me to LD about 5 years ago talked about a time between the end of Lucid dreams, where you have total control of your dream, but the scene fades to black anyways. This is where one dream ends, and another begins. I saw him everyday at work, and he always insisted to keep me informed about his progress in LD. He called it that void, which was the empty space between each dream. His goal was to extend his awareness into the next dream. One of his techniques he talked about was, when the dreamscape started to get darker, he would imagine a rope and lower himself into it. He would continue to climb downwards. Hand over hand until he fell into the next dreamscape. He said the most common dream he would come into would be his room.

Does this sound familiar to anyone? The reason why I ask is because I have not hit this point yet. But when I do I would want to know already different techniques to link lucid dreams. All opinions and techniques welcome!