The phrase "a subtle link between" is correct and usable in written English.
It can be used when discussing a connection or relationship that is not immediately obvious or is nuanced.
Example: "The research revealed a subtle link between diet and mental health that had not been previously explored."
Alternatives: "a delicate connection between" or "a nuanced relationship between".
Jenkins writes that military intelligence sought to create a "subtle" link in the public's minds between these true-to-life horrors of the Troubles and something more supernaturally evil as part of its propaganda campaign.
The fact that differences were observed in spontaneous strategies but not in any measure of cognitive performance highlights the utility of analysing behavioural processes at a finer level of detail in order to elucidate the often subtle link between genes and behaviour.
Acceleration is essentially linked to gravity through Einstein's general theory of relativity, Mann says, so the result hints a subtle connection between gravity and entanglement.
In "Conversation," Marek Nowakowski presented a fictionalized account of an interrogation that drew subtle links between victim and executioner.
It describes the life of a family and the subtle links between its members and their environment.
What seem to be ordinary, everyday objects to some people can carry a storehouse of information about the owner's ideology, says a new wave of social scientists who are studying the subtle links between personality and politics.
The idea, says Mr von Tetzchner, is to increase Opera's market share and to encourage web designers to look beyond the "big two" browsers to a more diverse future.This is just one of the many subtle links between the old and new browser wars.
Subtle links between social capital and human capital are also established.
Amy attends a glamorous party of the global digerati; a montage draws subtle links among hacked e-mails, a C.E.O.
