I sometimes feel like I can talk to Krishna and He responds. Sometimes indirectly like today for example I was contemplating my relation with Krishna since I have not been so engaged in devotional service past 3 weeks. Suddenly my friends sends me a message "Standing still with my relationship with Source, I feel connected with the cosmos and through the cosmos with my environment. Direct contact is not so for me." I have many examples like this.
Other times I feel Krishna answers me directly in my thoughts, with thoughts that appear in my mind. I have the feeling that I can discern thoughts coming from Krishna and thoughts comming from my mind. But how can I be sure of this? (Ofcourse I know in the big picture all thoughts are Krishna's thoughts)
Sometimes when offering prasadam, I witness the thought "accepted".
For the indirect signs for me it is certainly Krishna, this gives me faith. Though with the thoughts, I am doubting, is this a figment of my imagination? How can I know?