In theory yes but it is risk you will overload brake modul and Märklin present only one track allowed connect to the brake modul.

Hi

The short answer is NO.

Why?
- the Break module is a relay reflecting the signal position. Are all your signals wired in parallel? Of course not!
- the other aspect is the dynamic of trains and their sliders change the voltage when entering / leaving a slow-down zone. They are meant for ONE train and ONE slider. Connecting 2 sets of track insulated section gets you closer to connecting a DC voltage to your digital voltage with all the sad consequences.

Notes:
- I am an engineer in Electronics and industrial electricity from France
- I have tried to come with break module solutions (see below) but lots of wiring and some drawbacks
- I ended up using Rocrail where you have a smooth speed control without ANY insulation or ANY relay being used.

The solution I tried was based on:
- using one relay per signal to switch between normal digital and DC power to slow down. This switched trak section is one train length before the signal
- the relay switches to DC on an approaching train and only for a time (a few seconds)
- if because of poor adjutment, the train stops too early, then it restarts at slow speed the reach the insulated section
- as a security, I inserted a 20W bulb for cars in series with the digital circuit to protect against excess currents

The result was this (not perfect, loads of wiring and relays


As already said, I switched to Rocrail which brought me the following advantages:
- no risk in switching over DC with digital power
- simplified wiring: no stop or slow down sections
- reduced cost: no signals in invisible areas, no break modules
- any train can be a shuttle and still stop at the proper location without any slider inversion module
- all speed controls come as very easy: a simple Action in Rocrail parlance
- no flickering on car lighting when passing an insulated section
- possibility to program any loco-specific action, maneuvering and so much more

The result is this


Cheers
Jean

Using contact-tracks, you could have the incoming train switch a relay that connects the brake-module to it´s track, while leaving the other track disconnected from the module.