The internal structure of this group was not well resolvable by their data, although later studies confirmed a close relationship between the kagu and sunbittern.
Although all problems are theoretically resolvable it is estimated this would take at least 17 months and the sheer number of issues would prohibit a practical inspection regime.
Thus, when imaging at visible wavelengths, the smallest resolvable features are several hundred nanometers in size (although point-like sources, such as quantum dots, can be resolved quite readily).
The orbit of the two components takes approximately 42 years, which when combined with the distance to the system makes the two stars fairly easily resolvable with a larger telescope.
Mutual recursion and non-trivial cycles are not resolvable by the gprof approach (context-insensitive call graph), because it only records arc traversal, not full call chains.