Severide learned that Damon was Benny Severide’s son during the season 12 finale, making Severide and Damon half-brothers in Chicago Fire. The reveal was as shocking to Kinney’s character as it was to viewers, but the episode ended before the audience could see the true extent of Severide’s feelings on the matter. One would think that the Chicago Fire season 13 premiere would resolve this cliffhanger. However, the episode’s six-week time jump meant that fans never got to see the immediate aftermath of Severide discovering he was related to Damon.
Severide might have been absolutely thrown off by the revelation, resulting in some awkward tension between him and Damon. Or he could have been elated. Whatever the case, viewers will never know because the Chicago Fire season 13 premiere skipped over the most interesting aspect of the new development. Six weeks go by, and Severide and Damon are buddy-buddy. Severide is looking out for his younger brother, while Damon is trying to learn as much as he can from his older brother. As a result, Chicago Fire season 12’s cliffhanger feels unresolved.