The 11th Chapter of Revelation reveals God's "Two End-Time Witnesses." Revelation 11:4 - "Theses are the two olive trees and the two lampstands standing before the God of the Earth."
Lampstands hold lamps. Biblically speaking, a lamp can be "symbolic" for the Word of God. Biblically speaking, a "lamp" also "symbolizes" the Word of God being illuminated. A good example of this is found in Psalms 119:105 - "Your Word is a lamp unto my feet and a light unto my path."
The "two lampstands" in Revelation 11:4 are representative of the "Two End-Time Witnesses" standing as lampstands on Earth before God, holding the "lamp" which represents the Word of God being illuminated.
Revelation 11:4 also speaks about The "two olive trees." Olive trees provide oil for lamps which at times in the Scriptures is "symbolic" of the anointing oil of the Holy Spirit of God.
The "two lampstands" will be the "Two End-Time Witnesses" standing on Earth before God that will go forth holding the "lamp" which represents the Word of God being illuminated by the anointing oil of the Holy Spirit. They will deliver the message of God's Word from the anointing oil of the Holy Spirit with illuminating truth that has been so lacking since the days of the Early Church.
NOTE: Revelation 11:4 does not say that the "two lampstands" and the "two olive trees" are standing before God in Heaven. This is the reason why the verse says, "standing before God of the Earth," meaning that the "two Lampstands" and the "two olive trees" are standing before God on Earth. If the "two lampstands" and the "two olive trees" were standing before God in Heaven, the verse would have read, "standing before God in Heaven."
When reading about the "Two End-Time Witnesses" functioning in the same type of miracle working power that Moses and Elijah performed in their ministry, it can easily cause us to lose sight of the fact that the most important part of the ministry of the "Two End-Time Witnessess" will be that of them going forth with the boldness of John the Baptist, proclaiming the illuminating truth of God's Word.
God's main purpose for imparting such great power to the "Two End-Time Witnesses" is to protect them for the purpose of the truth of God's Word being presented unhindered. Not even all the demonic forces of darkness will be able to stop the ministry of the "Two End-Time Witnesses" during their allotted time of 1,260 days given to them by the Lord. The Lord is going to end this Age with the illuminating truth of God's Word going forth, which the enemy will be powerless to stop.
It may very well be that the "Two End-Time Witnesses" will work independently from one another during their ministry.