Hmm, as of now 12678 is @ PGT, maybe CBE @ 3:45 or 4... If it comes after 3:50 PM, you'll be eligible for full refund as delay>=3 hours. Anyways, it'll reach SBC around midnight only as it'll have to encounter 16232, 16236 and maybe 11013 in single line territory. So, bus would be better here.