Generally When late, SDAH raj is departs after HWH Raj bcoz HWH Raj is the Elder Bro in this route and has preference.
2 days back, 2302 overtook SDAH Raj between CNB and ALD to reach faster at DHN. My Uncle was travelling in 2302.he didn't knew the scenario till he reached gaya when he heard the announcement which is done that SDAH Raj will arrive at so snd so platform at xxxx time.(the time after 2302 departed from gaya)