These are 2 parts-a little further apart as usual, in the very same station complex. S=süd=south, or maybe just S-bahn=local train.The time is probably aimed at elder people with loads of luggage. As always: just follow signs.

However, as such this is quite unusual, it may be due to again works along the line for some part on your route, The railnetwork in B is so dense and interlocking, that its likely possible to change routing-more&more we see completely stupid routings by people who seem not even be able anymore to look at maps and only believe in these travel planners.

It depends on the station. In Berlin Südkreuz, it's just from one level to another level in the same station. 7 minutes is more than enough.