A class, a church graduation, and a tunnel hill house lucid dream

Another strange lucid dream here folks. What can I say? Anyway, I was in class like always. We were engaged in some sort of debate and I'm not even sure what my stance was. I just know that everyone else was wrong and I was about to win all the marbles. I stood up in a dramatic fashion and walked out of the room. In the hallway I ran into a conundrum. There was a portal in the hallway that, if you went through it, led back to a point in time where you would not have gone through it unless you already had. One poor guy, completely confused by it, was stuck in a loop. He looked at me and keep appearing and disappearing. There was a statue of a lion next to the portal and I remember there being something sentient about it. I decided not to explore that part of the dream and I was ushered into a large hall. Inside was a large procession of people who walked in and sat. I think they were wearing purple but I don't quite recall. Anyway, I went in and sat down in the row behind everyone else. The graduation ceremony started with an opening statement from some religious official.

I shifted to another part of my dream world. There was a lively discussion going on. I was disembodied, an observer, a fly on the wall. I followed the words down through a series of tunnels. The earth opened up and I saw a large underground chamber. Two sets of train tracks reach into the depths of the cave, undulating with the lay of the earth. There was another trail on elevated earth that followed the terrain similar to the tracks but it was all dirt. I then saw the people talking. There was a wild-haird, Tarzan looking dude with crazy eyes standing across from two guys in suits. Their words were clear now. "And if I can use the tunnel", Tarzan guy pointed to an opening on the ceiling on the right side of the cave. "I can just drop in, slip over and head right home." As he spoke, I saw the path light up. It still didn't make sense because there was no link between the drop and the dirt path where he wanted to build his house into the hillside of. The path would lead right down into his house yet somehow continue over it if he wanted. His explanation made sense but something still wasn't adding up. The dream ended so I never got to see how the house turned out. Was that weird?