Jennifer Maas TV Business Writer SPOILER ALERT: This interview contains spoilers from Fox’s “9-1-1” Season 6 spring premiere on Monday, entitled “In a Flash.” The sixth season of Fox first-responder drama “9-1-1” returned Monday after a months-long winter hiatus, with an episode in which almost everything goes surprisingly right for the 118 — until it goes horribly wrong. Before the bad came the good, when Maddie (Jennifer Love Hewitt) and Chimney (Kenneth Choi) hosted their families at their new house with daughter Jee-Yun. Maddie was expecting her and Buck’s (Oliver Stark) parents, and imagining that they would be quite judgmental and rude, as they have been in the past. Chimney, meanwhile, had invited only his brother Albert (John Harlan Kim), but got a surprise visit from his estranged father and stepmother, as well — immediately assuming they would be even harder on him than Maddie’s parents would be on her.