Sayyed Mohammad Al-Musawi,
Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to religious questions. In the past, he has also spent significant time in India guiding the community.
If the traveler is praying exactly behind the Imam of Jama’at, those who pray on his right and left will remain connected with Imam because they are near the Imam, and others who are connected to them will remain connected as well.
If the traveler is praying in the first row away from the Imam, on any side , and he finishes his Salah, those who are away from the Imam will be disconnected if the gap is more than one yard. Many scholars say that one person does not make disconnection, but Ehtiyat ( precaution) is always good. Travelers should not pray in the first row. If they pray in any other row, they will never cause disconnection to others.
Even if disconnection takes place, the Salah will remain valid, but not as Jama’ah but as Furada just after disconnection.