Yes! In order to merge two videos, hover over the gear icon on the top right hand corner of your video and select 'Merge With.'
A new window will appear. Then, select the second video you would like to merge with from the drop down list. You can choose to swap the positions of the videos to choose which video comes first.
If you'd like to change the title of the merged video, you can do so by clicking on the pencil icon and giving the video a new title. When you are done, click the blue 'Merge Videos' button, and the new merged video will appear on your Videos & Files page.