I've always understood this scripture to be in relation to asking questions in Church and the whole issue of maintaining order in Church. Imagine someone like Ray atempting to teach a sermon and people are firing questions all over the place, it would be chaotic.
1 cor 11:5 But every woman who prays or prophesies with her head uncovered dishonors her head, for that is one and the same as if her head were shaved.
Surely prophesying involves speaking?
Acts 2:17 Peter is explaining how and why the disciples are speaking in tongues, after some accused them of being drunk.
17 ‘ And it shall come to pass in the last days, says God,
That I will pour out of My Spirit on all flesh;
Your sons and your daughters shall prophesy,
Your young men shall see visions,
Your old men shall dream dreams.
18 And on My menservants and on My maidservants
I will pour out My Spirit in those days;
And they shall prophesy.
19 I will show wonders in heaven above
And signs in the earth beneath:
Blood and fire and vapor of smoke.
20 The sun shall be turned into darkness,
And the moon into blood,
Before the coming of the great and awesome day of the LORD.
21 And it shall come to pass
That whoever calls on the name of the LORD
Shall be saved.
Acts 18:26 suggests that a woman did indeed teach a very prominent minister in a sinagogue
In 1 Cor 3:5-6 Paul refers to Appolos as a minister. Acts 18:24 says he was eloquent and mighty in the scriptures.
Acts 18:24 Now a certain Jew named Apollos, born at Alexandria, an eloquent man and mighty in the Scriptures, came to Ephesus. 25 This man had been instructed in the way of the Lord; and being fervent in spirit, he spoke and taught accurately the things of the Lord, though he knew only the baptism of John. 26 So he began to speak boldly in the synagogue. When Aquila and Priscilla heard him, they took him aside and explained to him the way of God more accurately.