telnet connects, but mysql times out

I have access to two servers:

• A runs Ubuntu Server and I connect to it via SSH
• B runs Windows Server 10

A should be able to connect to B:1433 to the MySQL Server.

Both A and B are on the same network.

I have tried to do:

mycli --verbose -u USER -h IP_OF_SERVER_B -P 1433 -p '...'

This times out.

However, nmap shows the 1433 port as open and telnet can connect to it.

$ sudo nmap IP_OF_SERVER_B
[sudo] password for ...: 

Starting Nmap 7.60 ( https://nmap.org ) at 2020-07-23 04:45 UTC
Nmap scan report for IP_OF_SERVER_B
Host is up (0.0014s latency).
Not shown: 999 filtered ports
PORT     STATE SERVICE
1433/tcp open  ms-sql-s

And:

$ telnet IP_OF_SERVER_B 1433
Trying IP_OF_SERVER_B...
Connected to 10.10.1.7.
Escape character is '^]'.

How can I connect to the MySQL Server? I already enabled remote access on the MySQL Server side.