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One of the biggest mysteries in modern astrophysics is the mechanism driving the launching of jets from compact objects. Observing how jets which accompany super-Eddington accretion couple to the inflow comma will test the physics of the launching and yield a major step forwards in our understanding. We have recently shown that the radio core of the ULX comma Ho II X-1 varies on timescales of mins-days comma allowing us to probe this coupling for the first time. XMM-Newton and VLA together are the only instruments capable of delivering this ground-breaking science and for which we are proposing a series of 10 simultaneous observations. To place the physics of the coupling into context comma we are also requesting a series of Swift snapshots which we will match with AMI observations at 16 GHz.