Complex sentence: Elsewhere, Venom is taking on the Crime Master and seems to notice that he is acting differently, at the same time Spider-Man gets a call from Spider island about Venom and Crime Master and proceeds to have a small army assemble outside the building.
Split into simpler sentences: Elsewhere, Venom is taking on the Crime Master and notices that he is acting differently. At the same time Spider-Man gets a call from Spider Island about Venom and Crime Master and proceeds to have a small army assemble outside the building.