what do you think of plotting such locations as Bālaklonakāragāma (a village) [doesn’t have its own entry in the DPPN] and Pācīnavaṁsadāya (a park)?
both are mentioned in MN 128 and according to DPPN were situated between Kosambi and Pārileyya
When the Buddha found that he could not persuade the Kosambi monks to refrain from quarrelling, he left Kosambi alone and unattended, and passing through Balaklonakaragama and Pacinavamsadaya, went to Parileyyaka
The park (Pacinavamsadaya) lays between Balakalonakaragama and the Parileyyakavana
at the absence of the information of their exact or likely location, maybe the relative one will suffice