Sir,
The first passenger has been confirmed while preparing chart for the General Quota from Howrah. Within their quota, they found during charting that this leg (Nagpur - Akola) was vacant and the first passenger has been allotted that berth. Since only one berth was available before they reached till your PNR, the other passenger is pending for Nagpur itself whose luck will be decided while charting takes place for Nagpur quota.
Till Nagpur charting does not take place, the status 'Chart Not Prepared' shall stand.