Yes both can be merged and run daily but Nagavali has less quota in Vskp which I'd not sufficient provided they should introduce a new triweekly to Lingampalli as they are no overnight trains to LPI and all terminate at SC, HYD and not possible for change in terminals. They should make into daily and can extend VSKP Mahboobnagar further to Kurnool to compensate loss of berth due to extentions.