Okay so here's what happened.
Monday was the first week back from the break. And I had a literal (not really) TON of stuff to do. So by the time Supergirl came on, I was still working on this project and didn't finish until 9:30.
Tuesday was a fairly light day. But my folks got a new fireplace/heater type thing and they wanted to set it up. So that meant we had to rearrange furniture. Again. Which took up so much time.
Wednesday my research paper was due. So I had to edit that and then start work on my Final Exam paper. Which took FOREVER!!!
Thursday I was still working on the paper. And getting ready for my robotics meet that was going to happen Friday.
Friday I got up at five, finished 98% of the paper and watched Legends. I didn't have time to watch the other two.
Saturday gets here and I was so exhausted I almost slept until noon. And the internets freaked out all weekend so I pretty much gave up. And we watched Inception instead.
So........it wasn't meant for me to watch the crossover.