Is it permissible to have a congregation prayer in a building, a building floor, a courtyard, or somewhere else, behind an Imam who is completely in a separate mosque, which means that the Imam and those behind him in the congregation cannot be seen or heard in their mosque except through speakers or screens that transmit the sound or image through modern electrical electronic devices or the Internet?

Assalamu Alaikum. May Allah help you in your work. Is it permissible to combine the Kaffara (expiation) of fasting for two consecutive months with the Kaffara of unintentional killing between Sha’ban and Ramadan, knowing that the Kaffara for fasting is obligatory in the absence of liberating a slave, and the fasting of the month of Ramadan is obligatory? I.e., can we combine Sha’ban and Ramadan in the Kaffara of fasting? Jazakum Allah Khair.