Bengtsson was also influential in the team's success in the Champions Hockey League: He saw the ice in ten contests, scoring two goals and assisting on five more, helping Frölunda capture the CHL title.

[2] On 27 April 2016, he penned a two-year, entry-level contract with the Pittsburgh Penguins of the National Hockey League (NHL).

Further tests revealed he probably never had Lyme disease; instead, in March 2017, Bengtsson was diagnosed with Postural orthostatic tachycardia syndrome.

[citation needed] Opting for a release from his only season with Linköping HC, Bengtsson was signed to a lucrative two-year contract with Russian club SKA Saint Petersburg of the KHL on 21 May 2019.

[7] Following two seasons with SKA, Bengtsson was traded in the off-season to HC Dinamo Minsk in exchange for Stepan Falkovsky on 16 June 2021.