These are the packages that would be merged, in order:

Calculating dependencies  ...... done!
Dependency resolution took 20.11 s (backtrack: 0/20).

[binary  NS    ] dev-qt/qttranslations-6.6.1 [5.15.11]
[binary   R    ] app-office/libreoffice-7.5.6.2 
[binary     U  ] www-client/chromium-120.0.6099.129 [120.0.6099.109]
[binary  N     ] dev-qt/qtbase-6.6.1-r1  USE="X concurrent dbus gui libinput network nls opengl sql sqlite ssl udev wayland widgets xml -accessibility -brotli -cups -eglfs -evdev -gles2-only -gssapi -gtk -icu -libproxy -mysql -oci8 -odbc -postgres -sctp -test -tslib -vulkan -zstd" 
[binary  NS    ] dev-qt/qtwayland-6.6.1 [5.15.11-r1] USE="-qml% -vulkan%"