Between 2004 and 2007 when Maran was at the helm, sources say Siva preferred to live outside the country - sometimes in his newly-built house in the US or in Seychelles where he has been looking at leasing an island and built a resort city.
Those who know him say he feared for his life as well as a possibility of being put under custody on various alleged cases if he returned to Chennai, his home city.
The relationship also soured because of Siva's growing relationship with Ratan Tata.
Siva helped Tata get attractive discounts on telecom equipment for the latter's launch of telecom network, Tata Teleservices. That is because he had kept close relationship with key global equipment makers during his tryst with mobile services where he eventually collaborated and sold off his licence to the Ruias (of Essar).
The relationship was cemented when Siva bought a 10 per cent stake in Tata Teleservices.
But it is now clear that the Tatas were also fighting a bitter battle with Maran and were anxious to know if he would get another term as communications minister.
The tension in their relationship, say insiders, was because of Tata's decision to enter the broadcasting distribution space with Tata Sky, which would clash directly with SUN TV's foray into the direct-to-home business. Neither side is willing to confirm, but it is believed that SUN was keen that Tata undertake the venture with it as a partner but Tata was not willing.