Would the Syndicate or/and its coorporations have any involvement in Catamaran Naron?
In my view of them, thus how they are within the world of Catamaran Naron, Syndicate themselves concerns with where Nanotransen business concentrates, and since Nanotransen itself does not have a big presence within Catamaran Naron, the Syndicate does not have any hands there. The name Syndicate is also plastered on anything that gets in the way of Nanotransen, I like to imagine many received ideas, and the overall reputation is partly built by NT itself. They're both terrible.
Traffic around the planet is highly regulated since Thousand Tripwire formed, there are only 200-300 people on the planet side all year. And the groups of interests around Catamaran Naron are not a part of the big corporations seen in-game, mainly because I want this to be research and government stuff rather than megacorporations. NT is there as a treat and reminder that this worldbuilding started for station ocs and concepts lol. When it comes to corporations behind Syndicate (cybersun, gorlex, and interdyne) having a presence on Catamaran Naron, Cybersun is only distantly related, related being a nice way to put it, as they mostly provide some equipment through working as a third-party cargo. But Cybersun does not have a research team on the planet and did not acquire a permit for it either. While there is some interest in the matter, in the grand scheme of things, they do not have profit to be made there. Out of the megacorporations, only NT managed to get a permit for a research station. Though they were positioned in the Arctic Circle's Blind Spot (tho it doesn't exactly the artic and is more of an oval shape on maps), the Blind Spot is known to cause data loss, technological malfunctions, and communication errors. The choice of their location was not theirs. They were also located in an area with an assimilation rate of almost none. So it took them decades until Little Mule formed and could be monitored by them.
NT did not care about Catamaran Naron before CCs started appearing and being documented, with information being filtered before being released to people. Because before that, Catamaran Naron was just a planet with Cambrian era-like wildlife within its coeans, the planet was used as a cradle to stabilise populations of purpoises as well as study how their language may evolve in a new environment. Nothing NT would want to step in until it became "interesting" on a research level there.