Hello Schola.
It seems you want to display two graphs/trends in one graph window with two different colors.
This is what you do.
Bundle X axis data as first input to a cluster.
Bundle Y axis data as second input into the same cluster.
Do the same for graph #2.
Then input both of the clusters into a "build array".
After that you can input them into the 2d sink of the XY-graph. You can format the x-axis of the XY-graph to your liking (date/time) in this case, I guess.
Hint. You can bundle a array of timestamps as your x-axis.
🙂I attached a small example to get yourself going.
Cheers
//Beckman