I totally agree with you, seen in that match union berlin underestimated bochum too much, union berlin appeared surprising after they managed to beat dortmund, leipzig and managed to hold Bayern. Bayern must be very happy with this union defeat. tomorrow union will face Braga in the European league, don't know if they will lose or win against Braga.
SC Braga is one level above Union Berlin in the Europa League group standings with a very thin point difference. But I don't think that Union Berlin will let SC Braga win in that match, moreover it will take place at Union Berlin's home ground. Which is a motivation for Union Berlin to get full points and also to get a better position in order to qualify for the round of 16 later after the final match in early November.