Data crunchers and political analysts have only been able to draw correlative conclusions between bond purchases and favourable outcomes for those who donated to the political parties. The government, especially Finance Minister Nirmala Sitharaman, has tried to suggest that no causal relationship can be established from just a temporal sequence.
Still, the correlations are strong enough in some cases to make reasonable speculation. For example, several companies bought electoral bonds in the shadow of raids and investigations by Income Tax (IT) authorities, the Enforcement Directorate (ED), and the Central Bureau of Investigation (CBI), and subsequently, their cases seemed to go into cold storage. This suggests one coincidence too many.