It seems that there might be an issue with the departure and arrival times provided for the bus services 679A and 679B between Kallakurichi and Namakkal. The arrival time for both services is listed as 7:50:00, which suggests a discrepancy. Bus services typically have different arrival times for different schedules.
If you have more specific information or if there are any corrections needed, please provide the accurate departure and arrival times, and I’d be happy to assist you further.