Sure, coming back to fix something is absolutely completing actual tasks for the company. But I certainly disagree you can generalize answering a question as "e

Sure, coming back to fix something is absolutely completing actual tasks for the company. But I certainly disagree you can generalize answering a question as "effectively acting as a consultant for [the company]". Someone who replaced you but you don't know reaches out asking for help on their work? Or you're being asked questions you'd need to dig in to? "Sorry, I don't work there anymore". But answering a text message from someone you had a good relationship with, who is asking a question in good faith, the answer to which you can recall without effort? Wouldn't agree with calling that consulting.