NEW YORK—Carnegie Hall will resume performances in October following a 1 1/2-year closure caused by the coronavirus pandemic but with a limited schedule of recitals and small ensembles until large orchestras return in January. The Hall initially intended to open the season with a virtual gala, but Carnegie executive and artistic director Clive Gillinson said planning is underway for a live opening concert following New York Gov. Andrew Cuomo’s announcement on May 5 that Broadway theaters could reopen in September at full capacity. “The governor’s announcement about Broadway changed everybody’s thinking overnight,” Gillinson said. “I think nobody until that announcement was thinking you could be looking at the fall in terms of full houses potential from the very start.” Gillinson said the Hall had cut its schedule of 150 initially planned concerts to about 90 but now was considering the addition of up to 10 programs in the autumn, including …