Yes it is quite possible. You just need 2 output to showcase on y axis and may be timestamp on x-axis. Few settings that you need are below:
1. ChartOrientation - Verticle
2. Chart Type = Line/Marker
3. SeriesType1 = Use CHart Settings
4. SeriesType2 = Bar ( whatever series you want to show as bar just select "bar" from dropdown)
In attached pic from my, I have 2 lines and 3rd one is bar. So in my case seriesType1 & seriesType2 are going to be "Use Chart Settings" and SeriesType3 is "Bar".
I achieved this requirement in previous versions using label chart widget. But now i am using TW 9.1 version here we dont have label chart i found bar and line seperate charts.
