Hello again Patrick
(I am afraid I cannot help you with your App problem.)
Milan to Wengen 3rd September
In my reply 10 to your previous thread I wrote ‘It appears that trains on the Simplon line via Domodossola and Brig will still be affected by engineering work in September.’
https://www.myswissalps.com/community/thread/overnight-in-wengen/
It is now clear that there is extensive engineering work in September on the Simplon Line. The schedules I gave in my reply 14 of your previous thread are not valid
Basically you now have three options
Option A
This has two advantages. There is no need for any seat reservations. Cheap Italian Regional Train fares apply for the Milan to Domodossola leg of your journey.
Leave Milano Centrale on the 08 25 regional train bound for Domodossola, arriving there at 10 05.
Leave Domodossola at 11 20 on a rail replacement bus bound for Isella di Trasquera, arriving there at 11 45.
Leave Isella di Trasquera at 12 16 on the RE1 train bound for Bern via Kandersteg. Get off at Spiez at 13 44.
14 06 RE9 train from Spiez to Interlaken Ost arrive 14 26
14 34 R62 train to Lauterbrunnen, arrive 14 56
15 00 CC63 train bound for Kleine Scheidegg. Get off at Wengen at 15 11.
Options B and C both involve your travelling on Eurocity (EC) trains from Milan. Two disadvantages. Seat Reservation is compulsory. The Milan to Domodossola Italian fares will be much higher
Option B
07 10 EC train from Milano Centrale bound for Basel. You get off at Brig at 09 16.
From Brig, 09 36 RE1 bound for Bern via Kandersteg. You get off at Spiez at 10 44
11 05 IC61 to Interlaken Ost, arrive there 11 28.
11 34 R62 train to Lauterbrunnen, arrive 11 56.
12 00 CC63 train bound for Kleine Scheidegg. Get off at Wengen at 12 11.
Option C
08 10 EC train from Milano Centrale bound for Geneva. You get off at Brig at 10 14
From Brig, 10 36 RE1 bound for Bern via Kandersteg. You get off at Spiez at 11 44
12 06 RE9 to Interlaken Ost, arrive there 12 26.
12 34 R62 train to Lauterbrunnen, arrive 12 56.
1300 CC63 train bound for Kleine Scheidegg. Get off at Wengen at 13 11.
Wengen to Milan 4th September
Follow the itinerary set out in my reply 2 to your previous thread under the heading A scenic route comfortably doable in one day.
Remember that you will need Italian regional tickets for the 51 kilometres from Chiasso to Milan.
https://www.myswissalps.com/travel-guide/italy-switzerland/
Kind regards
Roger