Timetables indicate a direct flight, only 15min. longer than AGP. So maybe they keep 4 - 5 more seats empty.
ANR will always be rwy constrained; with the end of rwy road tunnel nearing completion to get a proper RESA, political opponents are now complaining about a 7 (yes, seven) meter "illegal" rwy extension (based on a 'measurement' using Google Earth).