How openbox knows .bash_aliases used in its autostart file

Question

I'm using two commands in a file executed by my .config/openbox/autostart.sh which are also aliased in my .bash_alises and one of them changes from time to time. The thing is that I also use these commands aliases in my .bash_aliases and changing all files with every change in every same way is quite annoying.
I'd like to have my aliases been known by the Openbox autostart file.

My .config/openbox/autostart.sh (mainly)

. $GLOBALAUTOSTART
lxterminal -e "$(cat ~/.config/openbox/terminal.sh)" # command for a clean autostart file

My .config/openbox/terminal.sh

a="b"

while [[ -n "$a" ]]; do
        read a
        if [[ "$a" =~ "o" ]] || [[ "$a" =~ "O" ]]; then
                sudo mount -t davfs example.com/webdav ~/exampleCom
                rsync -giloprtu --specials exampleCom/dir0/ dirs/directory_0
                rsync -giloprtu --specials exampleCom/dir1/ dirs/directory_1
                sudo umount exampleCom
        fi
[…]
done

My .bash_aliases

alias RS='rsync -giloprtu --specials'
alias RSYNC='sudo mount -t davfs example.com/webdav ~/exampleCom
RS exampleCom/dir0/ dirs/directory_0
RS exampleCom/dir1/ dirs/directory_1
sudo umount exampleCom'

Desired .config/openbox/terminal.sh

a="b"

while [[ -n "$a" ]]; do
        read a
        if [[ "$a" =~ "o" ]] || [[ "$a" =~ "O" ]]; then
                RSYNC # read from my ~/.bash_aliases
        fi
[…]
done