Connecting 2 stoves to 1 chimney - Install stove pipe inside the room?

Hello everyone,
I hope my question fits into this area - otherwise, feel free to move it.

We are currently planning our renovation, in which a chimney including a fireplace is to be retrofitted.

I have depicted it very schematically... The blue line is the ridge.
The chimney is to be placed in the middle of the room (according to the chimney sweep, this is better than an exterior chimney, also due to the new regulations for chimneys regarding placement and projection above the ridge).

Now we are considering installing an additional "fireplace" in the kitchen, i.e., a wood stove.
This obviously also requires a connection to the chimney...
I want to avoid having to install a second exterior chimney for this, which - again with reference to the new regulation - would have to be extremely tall.

What options are there for routing a pipe inside the building to lead the wood stove exhaust into the chimney?
Currently, I only have the image in mind that we would have to run a black stove pipe along the roof slope...
Or are there perhaps completely different possibilities? Possibly outside the building?

Best regards and thanks

Are you sure that you are allowed to connect 2 ovens to one chimney? I vaguely remember that our chimney sweep caused problems because of that...

What options are there to install a pipe inside the building to lead the exhaust of the wood stove into the chimney? Currently, the only image I have in mind is that we would have to lay a black stove pipe along the roof slope... Or are there possibly completely different options? Maybe outside the building?

Property. A multiple occupancy can be done. But various requirements must be observed. Also depending on whether it is built/converted with a ventilation system, an exhaust system measurement must be carried out to my knowledge, pipe lengths and routes must be considered, etc. An answer to your question is only given by the inspecting chimney sweep. Unfortunately not here, that would be reckless.

Hi, thank you very much for your feedback. Then I will probably have to clarify that with the chimney sweep. So far, he only knows about the chimney and a fireplace... I just thought I'd get some ideas and suggestions here ;-)

Two (even up to three) stoves on one chimney are, as far as I know, relatively unproblematic, but this should be clarified with the chimney sweep. In case of doubt, the chimney will be somewhat wider and have two flues? However, you can't build supply lines indefinitely long:

"As a general rule of thumb, you can use the 1-to-4 rule. This states that the length of the flue pipe should be in a 1 to 4 ratio to the length of the chimney. With a maximum installed length of 3 meters, the chimney should therefore be 12 meters high" (Source an internet site with "O", named like the device where you put wood in.)

A pipe running across the kitchen and living room looks absolutely awful and I would never do it. An external chimney can be relatively easily made yourself as a kit, if necessary also twice. The advantage there is also the external combustion air. If an indoor chimney, then on the wall facing the kitchen.