Fiber optic connection is being installed - use existing multi-utility infrastructure?

Same. The installation must be sealed correctly, otherwise all damages/consequential damages are the responsibility of the craftsman who was working on it last. Because even in court, contrary to earlier: Rule one: Whoever was last is to blame Rule two Whoever was last and doesn’t want to be blamed must prove it beyond doubt (with expensive expert reports)...

Yes, of course, and what speaks against sealing it correctly? The house entry must be sealed anyway when they drill a hole in the wall for the cable. Sealing the multi-service line, which is one meter away from the house, should also be easier to seal than a hole directly in the house. As you wrote, there are special seals for that. The topic is up for discussion with us as well. And for me it is quite clear that they go through the multi-service line. Otherwise, they just won’t install fiber optic.

Yes, sure, and what speaks against sealing it properly? After all, the house entry must also be sealed when they drill a hole in the wall for the cable.
Sealing the multi-duct, which is one meter away from the house, should also be easier to seal than a hole directly in the house. As you wrote, there are special seals for this.

The topic is also coming up for us. And for me it is quite clear that they go through the multi-duct. Otherwise, they simply don’t lay fiber optic.

Nothing speaks against it if you find a craftsman who does it.
And that brings us full circle.
Have a nice evening.

With me, DG would have used the multi-branch if I had laid the small empty conduit and they only had to blow through the fiber. After I saw how DG sometimes left streets and so on here and was able to watch the paving artists up close at work (from the office window), I lost confidence in their work quality and besides, I had a second alternative FTTH connection installed. Water, electricity, the piping for my geothermal drilling, and fiber were already there; the risk of damage by DG was too high for me. And in case of an emergency, I did not want to deal with their certainly not small legal department...

Yes, certainly, and what speaks against sealing it correctly? After all, the house entry must also be sealed when they drill a hole in the wall for the cable.
Sealing the multifunctional duct, which is a meter away from the house, should also be easier than sealing a hole directly in the house. As you wrote, there are special seals for that.

This topic is also pending for us. And for me it is quite clear that they go through the multifunctional duct. Otherwise, they simply won’t install fiber optic.

We have now had the copper cable (Telekom) installed through the multifunctional duct. If we ever get fiber optic (in the year 20xx), can it be installed through the same multifunctional duct or will the copper cable be removed and replaced with the fiber optic connection?

We have now had the copper cable (Telekom) installed through the multi-duct. If at some point (in the year 20xx) we get fiber optic, can it be routed through the same multi-duct or will the copper cable be removed and a fiber optic connection installed instead?

I don't think the latter. It wouldn't matter to us anyway, since our Telekom house connection is located in the garage and no one knows where it runs ;)

I don't think the latter. It wouldn't matter for us since our Telekom house connection is in the garage and no one knows where it goes ;)

That would be the question. For us, Telekom, electricity, sewage/water connections run from the beginning of the property to the house. Now power cables still need to be laid for the gate and the door. How is the garden landscaper (who digs; the electrician lays the cables) supposed to know where which cables were laid? Sewage/water shouldn't be the problem since they are laid deeper. But electricity and Telekom cables... Do you get a drawing showing where which cables were laid?