Savannah Guthrie with Jenna Bush Hager and Carson Daly on her first day back in April. Photo: Luiz C. Ribeiro The call came midafternoon on Sunday, February 1. Savannah Guthrie, the Today show co-anchor, and her husband, Mike Feldman, a public-relations executive, had just returned to their Brooklyn Heights townhouse from parallel weekends away: She and the kids, 9 and 11, had been at Today colleague Carson Daly’s Long Island home for a sleepover with his four children; Feldman had been on a