Indra Nooyi, the former chief executive of PepsiCo and co-chair of Lamont’s Reopen Connecticut Advisory Group, said the group was evaluating different plans but “we’re never, ever not going to focus on public health” in making any decisions. Currently, Lamont has ordered schools and nonessential businesses closed through at least May 20. He said Thursday he hopes his advisers will have a reopening strategy in place by that date.