Is it possible to merge multiple gnome-terminal windows into a single tabbed view? [duplicate]

There may be another, easier way to do this. But what I've found to work, is to activate the tab-bar in both terminal windows by pressing

ctrl + shift + t

and dragging the proper tab into one of the gnome-terminal windows. Then close the empty tabs until you are left with a single view.

Illustration

Drag the tab into the other windows tab-group Drag 1 tab into the other window

Once you have 3 open terminal tabs in a single view, close the extra, blank, terminal tab/window and you have achieved the desired result. Merged terminal view