I agree with you in that, to this point, it doesn't look like he obstructed but I'm not ready to give Trump a free pass either. He's very unorthodox, that is certain. lol. I do think he's in mode of running the country like he runs his personal businesses and quickly realizing that's a mistake.
Obstruction is not going to be proven, based on the Comey comment alone. There may be more out there and probably is. Remember, if he wanted to, Trump could simply pardon Flynn or any of the others.