Crossword puzzle clue "part of a connecticut trio"

Part of a Connecticut trio?

Trio + trio + duo

Familiarly, nutritious trio found twice in this puzzle—one trio is hidden in certain corners

Tree planted in New Haven, Connecticut, as part of the first public tree planting program in America

Part of New York south of Connecticut

Insurance company based in Hartford, Connecticut

Town across the Connecticut River from Springfield, Mass.

Connecticut city on the Naugatuck