Rani Chennamma never halts for just 2 minutes at Londa on the KOP-SBC journey. Usually the attachment of slip coaches is completed within 5 minutes; Londa is quite efficient at this process.
If Goa Express is significantly late arriving Londa from VSG (unlikely, as it has no reason to get so heavily delayed on such a short run), Rani Chennamma will not be detained. In that case, 02779 will be run independently upto Hubli and attached to Golgumbaz Express there. If the 02779 is so late that it can't connect even to Golgumbaz, it will run independently all the way upto Bangalore. However, the chances of such heavy delays are extremely low.