Does this work with Bose wired headphone with mic?

Just was gifted with an iPhone 6 power case AND a Bose headphone/mic combination (noise reduction, wired). The Bose headphones have an L-shaped connector that doesn't quite fit through the case like a straight connector would, so am thinking to use this as an adapter. I think this should work with a mic/headphone combination but wanted to make sure...

Thanks

Belkin Audio Splitter (3.5mm-M/2x3.5mm-F)

Belkin Audio Splitter (3.5mm-M/2x3.5mm-F)

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