gap

Q: I see that when some people from other countries pray salaah, they touch their toes and keep so much space between the shoulders. Please explain in detail if it is in Hadeeth.

Q: How long should one remain silent between fatihah and the next surah in jummah prayers? The Imams of the Haram usually remain silent after aamen for half a minute.

Q: Please explain the procedure of stepping forward to fill in a gap in the saff in front. Because beheshti zewar mentions to step past the sajdah position breaks the Salaah.