Synergy (Half-Life 2 co-op mod) can't connect through SteamID number like Sven (HL1 co-op mod)

In Sven Co-op you can connect to your friends' servers by typing:

connect STEAM_0:1:12345678

I'm changing the numbers of these values in the post, except for the headings.

To go through Steam's network and bypass the ports that may be blocking you. This is useful since I don't have the ability to open any ports on my network. The connection ID is gained by typing 'status' into the console.

The problem is for Synergy, connecting by this ID results in a bad address error. The address given when typing 'status' into console for Sven has a different heading as well.

steamid : [A:1:12345678:12345] (90128200123453894)

Have tried:

connect STEAM_[A:1:170001222:12222] (90128200959653894)
connect STEAM_A:1:170000222:12222
connect STEAM_175000022:122227
connect STEAM_A:1:170000222
connect STEAM_175200002
connect STEAM_A:1:175000022

All of which did not work.

In Sven, status returns only what is shown in the first bracket, but also has the heading 0:1: instead of A:1.

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How do you play Half Life 2 coop synergy?

Synergy is a co-operative multiplayer modification for Half-Life 2, Lost Coast, Episode One, Episode Two, and SiN Episodes: Emergence, allowing up to 10 active players to play simultaneously.

Is it possible to play Half Life 2 coop?

This game requires that you own Half-Life 2. Click here to learn more about mods on Steam.

Do you need hl2 for synergy?

How to Play Half Life For Free

Step 1: Go to the Sven Co-op page on Steam and download it by clicking 'Play Game'.

Step 2: If you don't already have Steam, you'll be prompted to setup an account. ...

Step 3: Boot up Sven Co-op, and from the main menu select \u201cStart Game.\u201d Click the dropbar, and choose the map \u201chl_c00\u201d.

Synergy (A Half-Life 2 Mod) - The Co-op Mode

Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

Images: Nataliya Vaitkevich, Nataliya Vaitkevich, Nataliya Vaitkevich, Nataliya Vaitkevich