Q1="Do you want to proceed? (Y:Yes, N:No, V:View Certificate)Yes"
Q2="One Time Password:"

get_otp(){
        for i in {1..60}
        do
            if otp_code is received; then
                echo otp_code
                exit
            else
                sleep 1
            fi
        done
}

expect -c "
spawn $SUDO connect_to_vpn
        expect {
           "$Q1" { send "Yes" }
           "$Q2" { Send "$(get_otp)" }
        }
        "