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collector increases

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For a wood collector carrying load to a moment frame:
For checking combined bending + axial of collector (load combination of 1612.4, strength level forces) is it correct to use 1.7 stress increase per 1633.2.6 and 1.33 load duration factor Cd per Chapter 23 of Div. III ? And if so, why doesn't the design example  in Volume II (page 273-274) use the Cd=1.33?
For a steel strap connection, (collector to collector across a girder) or... for the connection of the collector to the moment frame, same question. Use 1.7 & 1.33 for bolt in wood capacity?