Xbox Live Ultimate Games pass 2 Xboxs

No. If you purchase just Xbox Game Pass, then you would need Xbox Game Pass Core (new name for Xbox Live Gold) to play online multiplayer. If you purchase Xbox Game Pass Ultimate, then it would cancel your Xbox Live and convert it to Game Pass Ultimate and add it on to your Game Pass Ultimate. Any remaining time will convert to Xbox Game Pass Ultimate time at a ratio of 3:2 and be rounded up to the next full day. For example, 90 days remaining of Xbox Game Pass Core or PC Game Pass will convert to 60 days of Xbox Game Pass Ultimate time.

If it's just Game Pass then at the end of the 2 weeks Game Pass will end and you'll just have your Gold subscription.

If it's Game Pass Ultimate it will convert the gold you have until Ultimate as well. If the message you're getting says "Joining Xbox Game Pass Ultimate will upgrade your remaining Xbox Live Gold or Xbox Game Pass membership(s)
into Xbox Game Pass Ultimate for the same amount of time, up to 36 months total. All conversions are final; conversion ratio subject to change." Then the 2 months of gold will upgrade so you will have over 2 months of Game Pass Ultimate.

It actually costs less to subscribe to Game Pass Ultimate, than to subscribe to 2 separate services(Game Pass + Xbox Live Gold).

Example:

Xbox Live Gold($69.99/yearly subscription) + Game Pass($11.99/mo.) = $213.87/yr.*

Xbox Game Pass Ultimate($16.99/mo.) = $203.88/yr.*

There is also a current promotion for Game Pass Ultimate "Get first 2 months for $2":

Xbox Game Pass Ultimate($2.00/2mo.) + ($16.99/mo.) = $171.90/yr*

*The above example is Canadian pricing.

Additionally, if you are already an active subscriber to Xbox Game Pass and/or Xbox Live Gold, your first purchase of Xbox Game Pass Ultimate automatically upgrades your existing memberships to Xbox Game Pass Ultimate(up to a max. of 36 months).

For example, if you have 6 months of Xbox Live Gold and 6 months of Xbox Game Pass remaining on your account when you purchase your first month of Xbox Game Pass Ultimate, it will also convert your existing memberships to Ultimate, making a total of 13 months
of Xbox Game Pass Ultimate. That's a pretty sweet deal right there!

Even if you don't game on PC, these savings alone should be enough incentive to purchase Game Pass Ultimate..... and you still have the added bonus of PC gaming, if you ever desire to do so in the future.

Save yourself some money, get access to Gears 5 Ultimate Edition and all its content, plus 4 day early access.

Go Ultimate, you owe it to yourself!

I'm assuming you're talking about the deal to convert Xbox Live Gold and Gamepass to the Ultimate subscription. If you read the description on this page
it says "Joining Xbox Game Pass Ultimate will upgrade your remaining Xbox Live Gold or Xbox Game Pass for Console or Xbox Game Pass for PC time into Xbox Game Pass Ultimate for the same amount of time, up to 36 months". So you will still be able to take advantage
of the deal. At the moment there's also an offer to get 2 months of Gamepass Ultimate for $2 on top of whatever is converted.

If you subscribe to Game Pass Ultimate, your remaining Xbox Live converts into Game Pass Ultimate days. If the Game Pass Ultimate has run out you can either carry on with Game Pass Ultimate, or buy Xbox Live on its own. If you cancel Game Pass Ultimate
you lose any pre paid Xbox Live time.