Koinonia vs intercollegial relatinships are quite different in meaning and depth. Koinionia interpersonal relationship are far richer because they are blessings from and for God in the eternal kingdom of his Son, Messiah Jesus. They are God connections. Intercollegial relationships are man connections of peers in an organization that will pass away.
KOINONIA, KOINONEO, SUNKOINONEO and KOINONOS are the Greek words of rich interpersonal relationships, mutuality and interdependence with one another in the body of Christ. They are the share words of the community of our King—Jesus. Koinonia is translated: communion, community, communication, distribution, fellowship, share and partnership.
Intercollegial relationship starts to reflect those share words. But, colleague only indicates being accepted and treated as a peer in an organization. In an organization, common ground is found in go along to get along ways. They are only as good as relationships are expected to get.
The community of the King is the body of Christ, the community Jesus builds in the kingdom of God.
Dependent on Him, the whole body—its various parts closely fitting and firmly adhering to one another—grows by the aid of every contributory link, with power proportioned to the need of each individual part, so as to build itself up in a spirit of love. Ephesians 4:16.
For the Kingdom of God does not consist of eating and drinking, but of right conduct, peace and joy, through the Holy Spirit; and whoever in this way devotedly serves Christ, God takes pleasure in him, and men highly commend him. Ro 14:17-18
Paul shows us the depth of God connections.
If then I can appeal to you as the followers of Christ, if there is any persuasive power in love and any common sharing of the Spirit, or if you have any tenderheartedness and compassion, make my joy complete by being of one mind, united by mutual love, with harmony of feeling giving your minds to one and the same object. Do nothing in a spirit of factiousness or of vainglory, but, with true humility, let every one regard the rest as being of more account than himself; 4 each fixing his attention, not simply on his own interests, but on those of others also. Let the same disposition be in you which was in Christ Jesus. Although from the beginning He had the nature of God He did not reckon His equality with God a treasure to be tightly grasped. Nay, He stripped Himself of His glory, and took on Him the nature of a bondservant by becoming a man like other men. Philippians 2:1-7
We are new creatures created in Messiah (2 Corinthians 5:17).
That is our new identity. Messiah is everything and is in all of us. We walk as God’s own people.
In that new creation there is neither Greek nor Jew, circumcision nor uncircumcision, barbarian, Scythian, slave nor free man, but Christ is everything and is in all of us. Clothe yourselves therefore, as God’s own people holy and dearly loved, with tender-heartedness, kindness, lowliness of mind, meekness, long-suffering; bearing with one another and readily forgiving each other, if any one has a grievance against another. Just as the Lord has forgiven you, you also must forgive. And over all these put on love, which is the perfect bond of union; and let the peace which Christ gives settle all questionings in your hearts, to which peace indeed you were called as belonging to His one Body; and be thankful. Let the teaching concerning Christ remain as a rich treasure in your hearts. In all wisdom teach and admonish one another with psalms, hymns, and spiritual songs, and sing with grace in your hearts to God. And whatever you do, in word or in deed, do everything in the name of the Lord Jesus, and let it be through Him that you give thanks to God the Father. Colossians 3:11-17
All Scripture quoted above is from the Weymouth New Testament WNT