I agree the dead know nothing ( Ecclesiastes 9:5 ), and we can Not communicate with the dead.
To me the 'realm' that Jesus put the dead in is in a 'sleep-like state' as mentioned at John 11:11-14.
Also, the old Hebrew Scriptures agree that the dead sleep -> Psalms 115:17; Psalms 146:4; Daniel 12:2,13.
So, while Jesus was dead in the grave ( Acts 2:27) Jesus was in an unconscious sleep-like condition.
After God resurrected Jesus, then spirit person Jesus remained around the Earth for 40 days in his spirit body.
In other words, before God sent Jesus to Earth, Jesus had a spirit body and returned back to his spirit body.
As far as the people Jesus' resurrected, ALL his resurrections were healthy physical earthly resurrections.
In other words, those dead people did return to life right here on Earth.
Adam, and none of us, had a pre-human life. Adam was only offered everlasting life on: Earth.
So, God's purpose is to have the Earth populated with righteous people - Proverbs 2:21-22
Righteous, or meek people to inherit the Earth - Matthew 5:5; Psalms 37:10-11
If there is No resurrecting to Earth, then Isaiah 25:8 is wrong because death will be swallowed up forever on Earth.
Is Scripture your final authority? Then you need to consider:-
Acts 2:31-32 (KJV)
31 He seeing this before spake of the resurrection of Christ,
that his soul was not left in HADES, neither his flesh did see corruption. 32 This Jesus hath God raised up, whereof we all are witnesses.
And again
John 2:18-21 (KJV)
18 Then answered the Jews and said unto him, What sign shewest thou unto us, seeing that thou doest these things?
19 Jesus answered and said unto them,
Destroy this temple, and in three days I will raise it up. 20 Then said the Jews, Forty and six years was this temple in building, and wilt thou rear it up in three days? 21 But he spake of the temple of his body.
Question: How could Jesus raise His own body up if He was around the earth somewhere?
And again
1 Peter 3:18-20 (KJV)
18 For Christ also hath once suffered for sins, the just for the unjust, that he might bring us to God, being put to death in the flesh, but quickened by the Spirit:
19 By which also he went and preached unto the spirits in prison;
20 Which sometime were disobedient, when once the longsuffering of God waited in the days of Noah, while the ark was a preparing, wherein few, that is, eight souls were saved by water.
I think our Lord Jesus was very busy in ministry whilst His body was buried for those three days.
You mention a sleep-like-state first in John 11:11-14 etc.
We must be careful not to add to Scripture, that which is not there. In this case it is ‘sleep-like’. We must fear God and not manipulate His word. If we manipulate His word, then we become the authority and not God. The words ‘sleep’ and being dead are often used interchangeably, but death is not ‘sleep like.’
Certainty for eternity