"The Conference was held at Rocky Hill, in the large, unfinished chamber of Brother Belden's house. The brethren came in until we numbered about fifty; but these were not all fully in the truth. Our meeting was interesting. Brother Bates presented the commandments in a clear light, and their importance was urged home by powerful testimonies. The word had effect to establish those already in the truth, and to awaken those who were not fully decided. 1T 85.1"
"And the apostles and elders came together for to consider of this matter."
Both passages describe gatherings of religious leaders/believers to discuss and consider matters of faith. The EGW passage describes a conference, while Acts 15:6 describes a meeting of apostles and elders. The thematic parallel is the act of coming together for deliberation.
"And they continued stedfastly in the apostles’ doctrine and fellowship, and in breaking of bread, and in prayers."
Both passages describe the activities of early believers, including instruction, fellowship, and prayer. The EGW passage describes a conference where the truth was presented and had an effect, while Acts 2:42 describes the early church's devotion to the apostles' doctrine and fellowship. The connection is that both passages highlight the importance of learning and growing together in faith.
"Now when they heard this, they were pricked in their heart, and said unto Peter and to the rest of the apostles, Men and brethren, what shall we do?"
Both passages describe a meeting where the message presented had a powerful effect on the audience, leading to conviction and a desire for change. However, the connection is somewhat general, hence the slight decrease in confidence.