السلام عليكم ورحمة الله و بركاته أحسن الله إليكم if we are attending/ listening to recorded lessons, do we get the same benefit of attending lessons live whether they are online or in person?

Do both. As for benefit, without a doubt you will benefit from both and different things as well, for example, meeting others and some experiences only happen personally. As for repeating and taking your time in writing notes and repeating what you have not understood is through recorded lessons. And both are extremely beneficial.