I get it now. I dont think so its politics. I think its also due to the fact that Akal Takh SF express runs on Sultanpur route. It makes sense to divert one SF via Pratapgarh
They can also off load some trains via BSB, Jhangai . Unchhar and rae barelli to lucknow. Thats another route ! FYI . So looks like there are 4 routes from BSB to LKO
Important Note:This website NEVER solicits for Money or Donations. Please beware of anyone requesting/demanding money on behalf of IRI. Thanks. Disclaimer: This website has NO affiliation with the Government-run site of Indian Railways. This site does NOT claim 100% accuracy of fast-changing Rail Information. YOU are responsible for independently confirming the validity of information through other sources.