Example of magnetic connectivity computed between the Earth and the Sun using COCONUT and EUHFORIA models. The Earth is depicted as a gray sphere to show the initial seed of the magnetic field line. Then, we have a first field line computed in EUHFORIA in the heliospheric part (shown as a white flux tube). The interface between the coronal and heliospheric parts (COCONUT and EUHFORIA) is shown via a transparent sphere at 0.1 AU. Finally, inside the coronal part, we show the second magnetic field line computed using COCONUT results (white flux tube inside the transparent sphere).