It is understood/guessable why some DLPNO calculations did not converge?
As noted in the methods section of the manuscript, we chose the widely-used cc-pVTZ basis set for the DLPNO-CCSD(T) calculations for comparison with a variety of other benchmarks using coupled-cluster thermochemistry. The molecules include some with iodine, which is not available in that basis set.
In the revised manuscript, we have clarified this further in the methods and as well in the results and discussion.