Yeah, it had nothing to do with Reus, Gungdogan, Sahin all getting to start together around that time for the first time since god knows when.
BvB has no technical ability to break down teams without those players in top form. Immobile plays well when BvB plays well. Don't ignore his CL record. In his first season in CL he has scored in 4 games out of 6. But world class strikers play well despite their team's performances...
Ummm... They started the week prior in the 1-0 home loss to Augsburg, in which Immobile did nothing. They also started against Juve in case you forgot, another match in which Immobile did nothing.
I already went over this in the week leading up to our first round CL tie against them, but the biggest change for BvB over the past several rounds was a shift in formation, that allowed Reus to return to the wing, instead of playing central, behind a front 3 in a 4-2-1-3. Aubameyang being shifted to CF, and Reus and Kampl on the wings, with Gundogan or Kagawa playing in the hole behind. They've won 4 straight BL matches with this attack, and scored 13 goals in the process.
Kampl got injured against Stuttgart, this was the only reason Immobile saw the pitch against Juve. Klopp had to rethink his front 3 and decided to try Immobile back in the centre with Aubameyang and Reus on the wings, with a mix of Gundogan and Mikh behind. Immobile did fuck all, so he was benched again for the next league encounter, and Mikh was put on the wing opposite Reus.
If you seriously think it's normal for a their "star" summer forward signing to be benched for 4 straight BL matches, not even see 1 minute on the pitch, you're crazy. And if you think he wasn't a big part of their anemic offense... Same thing. BvB created more chances in almost every BL game they have drawn or lost this year. It's just that Immobile and Ramos were appalling with their finishing, and the team made a large number of defensive errors.
Also, BvB played pretty well against Juve. Immobile sucked.