Close tab in T menu

[sound-friend]

hey! this extension is really cool and honestly intuitive for me. however, i'm not sure how to close a tab that i don't have open.
for example: the current site that's open is "tab1". when i press T i see "tab1" and "tab2". is there a quick shortcut that allows me to close "tab2" without having to switch to it first?

thanks for this incredible extension!