I explained there are different forms of time in Nirmanakaya and Sambhogakaya but not in Dharmakaya and DI operates in all 3. Also I said there has to be i) intention of master ii) Doing it at the same time & iii) getting into the state, for it to be two-way & interactive, otherwise while listening to a recording none of the above apply and he could be in the toilet anyway.
Secondly you mis-equate the qualification of space with time as your own dogmatic innovation with no proof except your own mental requirement. One, space, is a question of scale while the other, time, is regarding the dimensions, not scale, ie: going back or forth in time as opposed to current which is required. Current planet and current time equate perfectly in unison.
Thirdly I explained how someone in a courtyard at the back of thousands getting lungs from speakers without seeing the lama inside the packed temple is no different than listening on a computer speaker at the same time. Again you provide no logical reason why the two are different.
You go on to again innovate falsely that giving DI/Lungs to large groups is only one way as he could not possibly interact with so many. That is your mental fabrication. The group can get into the 'state of the guru he creates for that event'. You are making your own little funny rules based on nonsense. I say nonsense because you accept half the axioms at work and then dismiss the rest based only on what you can currently accept within your current mental models which are limited and false. You can not force reality into those. This is illogical. If you accept a one-to-one transmission as truly two-way, you would be called cuckoo by someone like Dawkins anyway. You can not accept half of it and then invent your own funny little rules based on your current limitations. What you describe here is only Astus's fantasy system.
If it is beyond time-space it is always "at the same time" of no-time, so there's no difference between live and recorded.
1- That is your own little non-scientific & non-tantric self-invented pet theory of time. 2) There are many exotic new theories of time within astrophysics, many opposing each other. 3) There will be different ones after a 1000 or a million or billion years of progress, all different theories to current ones or your little personal vague ones. 4) Even if any correct ones are finally discovered in totality, could be by definition impossible, it would only apply to parts of Nirmanakaya.
You can not fit the scientific world (current inaccurate near caveman version or ultimate one after billions of years if it exists) or the tri-kaya one into your idiosyncratic quaint little personal model. If you have needs to grasp that peculiar model and other funny little ones you have invented and keep changing, then there is no way to progress within Vajrayana empowerment system not to mention Dzogchen which is at the highest level beyond causality and time at the dharmakaya level while working within causality-time following the real rules, not personal little imaginary ones, within the two lower kayas.
Dzogchen masters I know say: 1)Buddhist religion essence is Dzogchen 2)Religions are positive by intent/fruit 3)Any method's OK unless: breaking Dzogchen vows, mixed as syncretic (Milanese Soup) 4)Don't join mandalas of opponents of Dalai Lama/Padmasambhava: False Deity inventors by encouraging victims 5)Don't debate Ati with others 6)Don't discuss Ati practices online 7) A master told his old disciple: no one's to discuss his teaching with some others on a former forum nor mention him. Publicity's OK, questions are asked from masters/set teachers in person/email/non-public forums~Best wishes