Hi, I’m arriving at CDG airport on 26/01/2020, 10am. I’ve booked a hotel in 5th arr., and I’ve tried searching the route to get to the hotel from airport by RER B (I used both Citymapper and Google Map to search for it). Initially it was clear that I only need to take RER B from the airport and stop at the Luxembourg RER station. However, after entering my arrival date and time, it was shown that I had to stop at Chatelet Les Halles and either walk to the hotel (which of course took a longer time than walking from Luxembourg station) or to make two transit (metro line 10 and 4). I’ve tried searching online but I don’t see any info regarding to disruption of RER B. May I know why these apps showed that RER B does not go to the stations after Chatelet les halles (e.g. Saint-Michel, Luxembourg) on the mentioned date? Is there any unannounced disruption or strike going on on 26/01 ?