Complex sentence: The group has so far focused largely on land based public transportation issues, and interacted with BMTC regarding marketing, availability of information, last mile issues and with South Western Railways for Bangalore Commuter Rail.
Split into simpler sentences: The group has so far focused largely on land-based public transportation issues. They have interacted with BMTC regarding marketing, availability of information and last mile issues, and with South Western Railways for Bangalore Commuter Rail.