1) Correct, 2 lines using 2 separate X-Y data but of the same structure and style. I will try to locate some actual data but it's of the same nature as the original one in my first post.
2) The data is captured every 0.5 milli seconds, but is updated from the calculation system every 20ms, hence the 20ms limit will allow me to see any points of changes to the data if any occured.
This is data captured from MATLAB which needs to be visualised outside of that software, with regards to data captured via sensors.