Andrew right now follows his instincts in a direction and he can feel that most likely going toward that direction he will be able to meet the mastermind.
But during that process naturally, he can feel the spiritual energy getting consumed very quickly. But at the same time, Philip was present there, so he was not worried about anything.
Like this he let his instincts follow in the direction and already he can tell he reached 50 km. But it looks like the mastermind isn't present in that place as his instincts tell him to go further than that.
During the time Philip, who is present with Andrew who is now using the symbol, already placed both of his hands on Andrew's shoulder and he already began to supply spiritual energy. First of all, Andrew cannot get distracted in this moment so he cannot let the symbol absorb All The Spiritual energy from Andrew.