Man pages matching name x11::xcb::connection in section 3pm:

X11::XCB::Connection.3pm.en	debian 10 / libx11-xcb-perl
X11::XCB::Connection.3pm.en	debian 11 / libx11-xcb-perl
X11::XCB::Connection.3pm.en	debian 12 / libx11-xcb-perl