I am not sure if this will work for you, but you can move the tabs next to each other and click on a tab, press shift, then select another one and all tabs in b

I am not sure if this will work for you, but you can move the tabs next to each other and click on a tab, press shift, then select another one and all tabs in between will be selected. Press Ctrl-W and it will close all of those tabs at once.