Once ALY - BSB electrification is done and FUT - IPR electrification is completed, train 12791 SC DNR express shall get extended to IPR.
Indirect extension (similar to 18696 / 18695 ) is also fine, with separate train numbers.
12791 can be extended as DNR IPR Intercity Express in the evening time, and with a night halt at IPR, 12792 or and intercity express train can originate from IPR at 8:00 am, so that 12792 can follow it's original schedule / path between Danapur and Secunderabad.