If different IP there is no relation to them, if same IP chain bans aren't guaranteed, many places like Universities and Coffee Shops for example have IP's where many people are playing so jagex can't just chain ban everyone unless their detection method is 100% sure it's you, happens more for example if you're doing many bots, same stats and same place with same gear, etc... still this isn't a guaranteed but still increases your chances of a chain ban exponentially